**UNITED STATESSECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 10-K**

(Mark One)

**x****  ANNUAL REPORT PURSUANT TO SECTION13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the fiscal year ended December 31, 2019or**

**o**** ****TRANSITIONREPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the transition period from _____ to _____Commission file number of the issuing entity: 333-207361-05**

**Central Index Key Number of the issuing entity:0001708131**

**CSAIL 2017-C8 Commercial MortgageTrust**

**(exact name of the issuing entity as specified in itscharter)**

** **

**Central Index Key Number of the depositor: 0001654060**

**Credit Suisse Commercial MortgageSecurities Corp.**

**(exact name of the depositor as specified in itscharter)**

** **

**Central Index Key Number of the sponsor: 0001628601**

**Column Financial, Inc.**

**(exact name of the sponsor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001542256**

**Natixis Real Estate Capital LLC**

**(exact name of the sponsor as specified in its charter)**

** **

**Central Index Key Number of the sponsor: 0001632269**

**Benefit Street Partners CRE FinanceLLC**

**(exact name of the sponsor as specified in its charter)**

** **

| **New York****(State or other jurisdiction of  incorporation or organization of**

**the issuing entity)** | **38-4040957**

**38-4040958**

**38-4040959**

**38-7187265**

**(I.R.S. Employer**

**Identification Numbers)** |
|------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------|

**c/o Wells Fargo Bank, National Association**

**as Certificate Administrator**

**9062 Old Annapolis Road**

**Columbia, MD**

**(Address of principalexecutive offices of the issuing entity)**

**21045**

**(Zip Code)**

**Registrant’s telephone number,including area code:**

**(212) 272-6858**

Securities registered pursuantto Section 12(b) of the Act:

| Title of each class | Trading Symbol(s) | Name of each  exchange on which registered |
|---------------------|-------------------|--------------------------------------------|
| None                |              |                                       |

Securities registered pursuant to Section 12(g) of theAct:  None.

Indicate by check mark if the registrant is a well-knownseasoned issuer, as defined in Rule 405 of the Securities Act.  o Yes ⌧No

Indicate by check mark if the registrant is not required tofile reports pursuant to Section 13 or Section 15(d) of the Act.  o Yes ⌧No

Indicate by check mark whether the registrant (1) has filedall reports required to be filed by Section 13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter periodthat the registrant was required to file such reports), and (2) has beensubject to such filing requirements for the past 90 days.  ⌧ Yes oNo

Indicate by check mark whether the registrant has submittedelectronically and posted on its corporate Web site, if any, every InteractiveData File required to be submitted and posted pursuant to Rule 405 ofRegulation S-T (Section 232.405 of this chapter) during the preceding 12 months(or for such shorter period that the registrant was required to submit and postsuch files).

Not applicable.

Indicate by check mark if disclosure of delinquent filerspursuant to Item 405 of Regulation S-K (Section 229.405 of this chapter) is notcontained herein, and will not be contained, to the best of registrant’sknowledge, in definitive proxy or information statements incorporated byreference in Part III of this Form 10-K or any amendment to this Form10-K.   

Not applicable.

Indicate by check mark whether the registrant is a largeaccelerated filer, an accelerated filer, a non-accelerated filer, a smallerreporting company, or an emerging growth company. See the definitions of “largeaccelerated filer,” “accelerated filer,” “smaller reporting company,” and“emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer       o                                       Accelerated filer                                                                        o

Non-acceleratedfiler         ⌧  (Do not check if a smaller reportingcompany)                                       Smaller reportingcompany                                                        o

                                                                              Emerging growth company                                                        o

If an emerging growth company, indicate by check mark if theregistrant has elected not to use the extended transition period for complyingwith any new or revised financial accounting standards provided pursuant toSection 13(a) of the Exchange Act.  o

Indicate by check mark whether the registrant is a shellcompany (as defined in Rule 12b-2 of the Act).  o Yes ⌧ No

State the aggregate market value of the voting and non-votingcommon equity held by non-affiliates computed by reference to the price atwhich the common equity was last sold, or the average bid and asked price ofsuch common equity, as of the last business day of the registrant’s mostrecently completed second fiscal quarter.

Not applicable.

Indicate by check mark whether the registrant has filed alldocuments and reports required to be filed by Section 12, 13 or 15(d) of theSecurities Exchange Act of 1934 subsequent to the distribution of securitiesunder a plan confirmed by a court.  oYes oNo

Not applicable.

Indicate the number of shares outstanding of each of theregistrant’s classes of common stock, as of the latest practicable date.

Not applicable.

**DOCUMENTS INCORPORATED BY REFERENCE**

** **

List hereunder the following documents if incorporated byreference and the Part of the Form 10-K (e.g., Part I, Part II, etc.) intowhich the document is incorporated: (1) Any annual report to security holders;(2) Any proxy or information statement; and (3) Any prospectus filed pursuantto Rule 424(b) or (c) under the Securities Act of 1933. The listed documentsshould be clearly described for identification purposes (e.g., annual report tosecurity holders for fiscal year ended December 24, 1980).

Not applicable.

 

** **

**EXPLANATORY NOTES**

The 85 Broad Street Mortgage Loan, the AppleSunnyvale Mortgage Loan, the Urban Union Amazon Mortgage Loan, the BroadwayPortfolio Mortgage Loan, the St. Luke's Office Mortgage Loan, the ColumbusOffice Portfolio I Mortgage Loan, the Alexandria Corporate Park Mortgage Loanand the Marble Hall Gardens Mortgage Loan, which constituted approximately11.1%, 8.7%, 4.7%, 4.7%, 4.2%, 3.7%, 2.5% and 1.4%, respectively, of the assetpool of the issuing entity as of its cut-off date, are each an asset of the issuingentity and are each part of a loan combination that includes (a) with respectto the 85 Broad Street Mortgage Loan which is an asset of the issuing entityand one other *pari passu* loan and three subordinate companion loans,each of which are not assets of the issuing entity, (b) with respect to theApple Sunnyvale Mortgage Loan which is an asset of the issuing entity and oneother *pari passu* loan and one subordinate companion loan, each of whichare not assets of the issuing entity, (c) with respect to the Urban UnionAmazon Mortgage Loan which is an asset of the issuing entity and one other *paripassu* loan and one subordinate companion loan, each of which are not assetsof the issuing entity, (d) with respect to the Broadway Portfolio Mortgage Loanwhich is an asset of the issuing entity and one other *pari passu* loan,which is not an asset of the issuing entity, (e) with respect to the St. Luke'sOffice Mortgage Loan which is an asset of the issuing entity and one other *paripassu* loan, which is not an asset of the issuing entity, (f) with respectto the Columbus Office Portfolio I Mortgage Loan which is an asset of theissuing entity and one other *pari passu* loan, which is not an asset ofthe issuing entity, (g) with respect to the Alexandria Corporate Park MortgageLoan which is an asset of the issuing entity and one other *pari passu*loan, which is not an asset of the issuing entity and (h) with respect to theMarble Hall Gardens Mortgage Loan which is an asset of the issuing entity andone other *pari passu* loan, which is not an asset of the issuing entity.These loan combinations, including the 85 Broad Street Mortgage Loan, the AppleSunnyvale Mortgage Loan, the Urban Union Amazon Mortgage Loan, the BroadwayPortfolio Mortgage Loan, the St. Luke's Office Mortgage Loan, the ColumbusOffice Portfolio I Mortgage Loan, the Alexandria Corporate Park Mortgage Loanand the Marble Hall Gardens Mortgage Loan, are being serviced and administeredpursuant to the Pooling and Servicing Agreement, which is incorporated byreference as Exhibit 4.1 to this Annual Report on Form 10-K. 

The Exhibit Index describesexhibits provided by certain parties (in their capacities indicated on theExhibit Index) with respect to the 245 Park Avenue Mortgage Loan, which constitutedapproximately 9.9% of the asset pool of the issuing entity as of its cut-offdate.  The 245 Park Avenue Mortgage Loan is an asset of the issuing entityand is part of a loan combination that includes the 245 Park Avenue MortgageLoan and twenty-two other *pari passu* loans and five subordinatecompanion loans, which are not assets of the issuing entity. A *pari passu*portion of the loan combination was securitized in the 245 Park Avenue Trust2017-245P transaction (the “245 Park Avenue Trust 2017-245P Transaction”).This loan combination, including the 245 Park Avenue Mortgage Loan, is beingserviced and administered pursuant to the trust and servicing agreement for the245 Park Avenue Trust 2017-245P Transaction, which is incorporated by referenceas Exhibit 4.2 to this Annual Report on Form 10-K.

The Exhibit Index describesexhibits provided by certain parties (in their capacities indicated on theExhibit Index) with respect to the Acropolis Garden Mortgage Loan, whichconstituted approximately 2.5% of the asset pool of the issuing entity as ofits cut-off date.  The Acropolis Garden Mortgage Loan is an asset of theissuing entity and is part of a loan combination that includes the AcropolisGarden Mortgage Loan and one other *pari passu* loan, which is not anasset of the issuing entity. This loan combination, including the AcropolisGarden Mortgage Loan, was serviced under the Pooling and Servicing Agreementfor the issuing entity prior to the closing of the securitization of the other *paripassu* portion of the Acropolis Garden loan combination in the CSAIL2017-CX9 Commercial Mortgage Trust transaction, Commission File Number333-207361-06 (the “CSAIL 2017-CX9 Transaction”).  After theclosing of the CSAIL 2017-CX9 Transaction on September 29, 2017, this loancombination, including the Acropolis Garden Mortgage Loan was, and willcontinue to be, serviced and administered pursuant to the pooling and servicingagreement with respect to the CSAIL 2017-CX9 Transaction, which is incorporatedby reference as Exhibit 4.3 to this Annual Report on Form 10-K.

The Exhibit Index describesexhibits provided by certain parties (in their capacities indicated on theExhibit Index) with respect to the Garden Multifamily Portfolio Mortgage Loan,which constituted approximately 2.2% of the asset pool of the issuing entity asof its cut-off date.  The Garden Multifamily Portfolio Mortgage Loan is anasset of the issuing entity and is part of a loan combination that includes theGarden Multifamily Portfolio Mortgage Loan and four other *pari passu*loans, which are not assets of the issuing entity.This loan combination,including the Garden Multifamily Portfolio Mortgage Loan, was serviced underthe Pooling and Servicing Agreement for the issuing entity prior to the closingof the securitization of a *pari passu* portion of the Garden MultifamilyPortfolio loan combination in the CSAIL 2017-CX10 Commercial Mortgage Trusttransaction, Commission File Number 333-207361-07 (the “CSAIL 2017-CX10Transaction”).  After the closing of the CSAIL 2017-CX10 Transactionon November 30, 2017, this loan combination, including the Garden MultifamilyPortfolio Mortgage Loan was, and will continue to be, serviced and administeredpursuant to the pooling and servicing agreement with respect to the CSAIL 2017-CX10Transaction, which is incorporated by reference as Exhibit 4.4 to this AnnualReport on Form 10-K.

The master servicer of a poolingand servicing agreement or trust and servicing agreement also functions as theprimary servicer of the related mortgage loans serviced and administeredpursuant to such agreement unless a separate primary servicer is identifiedherein.  If this report does not identify a separate primary servicer, theservicer compliance statement provided by the master servicer under any suchagreement also encompasses its responsibilities as primary servicer of therelated mortgage loan or mortgage loans.

Wells Fargo Bank, NationalAssociation is the master servicer and certificate administrator of themortgage loans serviced under the Pooling and Servicing Agreement and theprimary servicer of the 245 Park Avenue Mortgage Loan. As a result, Wells FargoBank, National Association is a “servicer” as defined in Item 1108(a)(2)(iii)of Regulation AB, in the capacities described above, because it is servicingmortgage loans that constituted 10% or more of the assets of the issuing entityas of its cut-off date. The assessments of compliance with applicable servicingcriteria, accountants’ attestation reports and servicer compliance statementsdelivered by Wells Fargo Bank, National Association in the capacities describedabove are listed in the Exhibit Index.

Wells Fargo Bank, National Association is the custodian ofthe mortgage loans serviced under the Pooling and Servicing Agreement, the 245Park Avenue Mortgage Loan, the Acropolis Garden Mortgage Loan and the GardenMultifamily Portfolio Mortgage Loan.  As a result, Wells Fargo Bank,National Association is a servicing function participant in the capacitiesdescribed above, because it is servicing mortgage loans that constituted 5% ormore of the assets of the issuing entity as of its cut-off date. Theassessments of compliance with applicable servicing criteria and accountants’attestation reports delivered by Wells Fargo Bank, National Association in thecapacities described above are listed in the Exhibit Index.

Park Bridge Lender Services LLC is the operating advisor ofthe mortgage loans serviced under the Pooling and Servicing Agreement and theGarden Multifamily Portfolio Mortgage Loan.  As a result, Park BridgeLender Services LLC is a servicing function participant in the capacitiesdescribed above, because it is servicing mortgage loans that constituted 5% ormore of the assets of the issuing entity as of its cut-off date. The assessmentsof compliance with applicable servicing criteria and accountants’ attestationreports delivered by Park Bridge Lender Services LLC in the capacitiesdescribed above are listed in the Exhibit Index.

Wells Fargo Bank, NationalAssociation acts as trustee of the Acropolis Garden Mortgage Loan and theGarden Multifamily Portfolio Mortgage Loan.  Pursuant to the pooling andservicing agreement for the CSAIL 2017-CX9 Transaction and the pooling andservicing agreement for the CSAIL 2017-CX10 Transaction, the trustee isrequired to provide an assessment of compliance with applicable servicingcriteria solely with respect to Item 1122(d)(2)(iii) of Regulation AB(regarding advances of funds or guarantees regarding collections, cash flows ordistributions, and any interest or other fees charged for such advances, aremade, reviewed and approved as specified in the transaction agreements).However, during the reporting period, the trustee did not perform any servicingfunction with respect to the servicing criteria specified in Item1122(d)(2)(iii) of Regulation AB.  The master servicer or the specialservicer, to the extent required, performed the servicing function identifiedwith respect to Item 1122(d)(2)(iii) of Regulation AB, and each such party includedItem 1122(d)(2)(iii) of Regulation AB in the assessment of compliance withapplicable servicing criteria and accountant’s attestation report for thesubject transaction.  As a result, this Annual Report on Form 10-K doesnot include an assessment of compliance with applicable servicing criteria ofthe trustee. One or more other servicers of the Acropolis Garden Mortgage Loanand the Garden Multifamily Portfolio Mortgage Loan have delivered one or moreassessments of compliance with respect to Item 1122(d)(2)(iii) of RegulationAB.

Wilmington Trust, NationalAssociation acts as trustee of the mortgage loans serviced under the Poolingand Servicing Agreement and the 245 Park Avenue Mortgage Loan.  Pursuantto the Pooling and Servicing Agreement and the trust and servicing agreementfor the 245 Park Avenue Trust 2017-245P Transaction, the trustee is required toprovide an assessment of compliance with applicable servicing criteria solelywith respect to Item 1122(d)(2)(iii) of Regulation AB (regarding advances offunds or guarantees regarding collections, cash flows or distributions, and anyinterest or other fees charged for such advances, are made, reviewed andapproved as specified in the transaction agreements). However, during thereporting period, the trustee did not perform any servicing function withrespect to the servicing criteria specified in Item 1122(d)(2)(iii) ofRegulation AB.  The master servicer or the special servicer, to the extentrequired, performed the servicing function identified with respect to Item1122(d)(2)(iii) of Regulation AB, and each such party included Item1122(d)(2)(iii) of Regulation AB in the assessment of compliance withapplicable servicing criteria and accountant’s attestation report for thesubject transaction.  As a result, this Annual Report on Form 10-K doesnot include an assessment of compliance with applicable servicing criteria ofthe trustee. One or more other servicers of the mortgage loans serviced underthe Pooling and Servicing Agreement and the 245 Park Avenue Mortgage Loan havedelivered one or more assessments of compliance with respect to Item1122(d)(2)(iii) of Regulation AB.

This Annual Report on Form 10-Kincludes assessments of compliance with applicable servicing criteria andaccountants’ attestation reports from CoreLogic Commercial Real EstateServices, Inc. and National Tax Search, LLC.  These entities were engagedby the master servicer under the Pooling and Servicing Agreement and theprimary servicer of the 245 Park Avenue Mortgage Loan to remit tax paymentsreceived from the escrow accounts of borrowers to local taxing authorities, toreport tax amounts due, to verify tax parcel information, and to verifynon-escrow tax payments. These servicing functions are included within theservicing criteria set forth in Items 1122(d)(4)(xi) and 1122(d)(4)(xii) ofRegulation AB.  Therefore, under the principles-based definition of“servicer” set forth in Item 1101(j) of Regulation AB that looks to thefunctions that an entity performs, these vendors are “servicers” for thepurposes of Item 1122 of Regulation AB.  *See* Compliance andDisclosure Interpretations, Section 301.01 (Item 1101(j)).

Theassessments of compliance with applicable servicing criteria, accountants’attestation reports and servicer compliance statements of the certificateadministrator of the 245 Park Avenue Mortgage Loan, the Acropolis GardenMortgage Loan and the Garden Multifamily Portfolio Mortgage Loan listed on theExhibit Index are omitted from this Annual Report on Form 10-K as the certificateadministrator pursuant to the related pooling and servicing agreement or trustand servicing agreement does not perform any activities that address servicingcriteria with respect to the issuing entity and because they are each not a“servicer” that meets the criteria in Item 1108(a)(2)(i) through (iii) ofRegulation AB.

With respect to the *pari passu*loan combinations that include the 245 Park Avenue Mortgage Loan, the AcropolisGarden Mortgage Loan and the Garden Multifamily Portfolio Mortgage Loan, (i)the reports on assessment of compliance with servicing criteria and attestationreports on assessment of compliance with servicing criteria of KeyBank NationalAssociation as primary servicer of the Acropolis Garden Mortgage Loan and theGarden Multifamily Portfolio Mortgage Loan, Rialto Capital Advisors, LLC asspecial servicer of the Acropolis Garden Mortgage Loan, CWCapital AssetManagement LLC as special servicer of the Garden Multifamily Portfolio MortgageLoan and Pentalpha Surveillance LLC as operating advisor of the AcropolisGarden Mortgage Loan, listed on the Exhibit Index are omitted from this AnnualReport on Form 10-K as they are not required to be included on this AnnualReport on Form 10-K per Instruction 3 to Item 1122 of Regulation AB becausethey are parties performing activities that address servicing criteria relatingto 5% or less of the assets of the issuing entity; and (ii) the servicercompliance statements of AEGON USA Realty Advisors, LLC as special servicer ofthe 245 Park Avenue Mortgage Loan, KeyBank National Association as primaryservicer of the Acropolis Garden Mortgage Loan and the Garden MultifamilyPortfolio Mortgage Loan, Rialto Capital Advisors, LLC as special servicer ofthe Acropolis Garden Mortgage Loan, and CWCapital Asset Management LLC asspecial servicer of the Garden Multifamily Portfolio Mortgage Loan, listed onthe Exhibit Index are omitted from this Annual Report on Form 10-K as they are notrequired by Item 1123 of Regulation AB to be included on this Annual Report onForm 10-K because they are each an unaffiliated party that is not a “servicer”that meets the criteria in Item 1108(a)(2)(i) through (iii) of Regulation AB.

**PART I**

**Item 1.  Business.**

Omitted.

**Item 1A.  Risk Factors.**

Omitted.

**Item 1B.  Unresolved Staff Comments.**

None.

**Item 2.  Properties.**

Omitted.

**Item 3.  Legal Proceedings.**

Omitted.

**Item 4.  Mine Safety Disclosures.**

Not applicable.

**PART II**

**Item 5.  Market for Registrant’s Common Equity,Related Stockholder Matters and Issuer Purchases of Equity Securities.**

Omitted.

**Item 6.  Selected Financial Data.**

Omitted.

**Item 7.  Management’s Discussion and Analysis ofFinancial Condition and Results of Operations.**

Omitted.

**Item 7A.  Quantitative and Qualitative DisclosuresAbout Market Risk.**

Omitted.

**Item 8.  Financial Statements and Supplementary Data.**

Omitted.

**Item 9.  Changes in and Disagreements WithAccountants on Accounting and Financial Disclosure.**

Omitted.

**Item 9A.  Controls and Procedures.**

Omitted.

**Item 9B.  Other Information.**

None.

**PART III**

**Item 10.  Directors, Executive Officers and CorporateGovernance.**

Omitted.

**Item 11.  Executive Compensation.**

Omitted.

**Item 12.  Security Ownership of Certain BeneficialOwners and Management and Related Stockholder Matters.**

Omitted.

**Item 13.  Certain Relationships and RelatedTransactions, and Director Independence.**

Omitted.

**Item 14.  Principal Accounting Fees and Services.**

Omitted.

**ADDITIONAL DISCLOSURE ITEMS FOR REGULATION AB**

**Item 1112(b) of Regulation AB, Significant ObligorFinancial Information.**

 

The 85 Broad Street Mortgage Loan (Loan ID 1 on Annex A-1 ofthe prospectus supplement of the registrant relating to the issuing entityfiled on June 29, 2017 pursuant to Rule 424(b)(2)) constitutes a significantobligor within the meaning of Item 1101(k)(2) of Regulation AB as disclosed inthe prospectus supplement. In accordance with Item 1112(b) of Regulation AB,the most recent unaudited net operating income of the significant obligor was$29,299,409.00 for the twelve- month period ended December 31, 2019.

**Item 1114(b)(2) of Regulation AB, Significant EnhancementProvider Financial Information.**

No entity or group of affiliated entities provides any external creditenhancement or other support for the certificates within this transaction asdescribed under Item 1114(a) of Regulation AB.

**Item 1115(b) of Regulation AB, Certain DerivativesInstruments (Financial Information).**

No entity or group of affiliated entities provides any derivativeinstruments or other support for the certificates within this transaction asdescribed under Item 1115 of Regulation AB.

**Item 1117 of Regulation AB, Legal Proceedings.**

The registrant knows of no material pending legal proceedinginvolving the trust or any party related to the trust, other than routinelitigation incidental to the duties of those respective parties, and thefollowing, with respect to Wells Fargo Bank, National Association, ascertificate administrator, as custodian and as trustee.

Beginning on June 18, 2014, a group of institutionalinvestors filed civil complaints in the Supreme Court of the State of New York,New York County, and later the U.S. District Court for the Southern District ofNew York, against Wells Fargo Bank, N.A., (“Wells Fargo Bank”) in itscapacity as trustee for certain residential mortgage backed securities (“RMBS”)trusts.  The complaints against Wells Fargo Bank alleged that the trusteecaused losses to investors and asserted causes of action based upon, among otherthings, the trustee's alleged failure to: (i) notify and enforce repurchaseobligations of mortgage loan sellers for purported breaches of representationsand warranties, (ii) notify investors of alleged events of default, and (iii)abide by appropriate standards of care following alleged events of default.Relief sought included money damages in an unspecified amount, reimbursement ofexpenses, and equitable relief. In November 2018, Wells Fargo Bank reached anagreement, in which it denied any wrongdoing, to resolve such claims on aclasswide basis for the 271 RMBS trusts at issue.  On May 6, 2019, thecourt entered an order approving the settlement agreement.  Separatelawsuits against Wells Fargo Bank making similar allegations filed by certainother institutional investors concerning several RMBS trusts in New Yorkfederal and state court are not covered by the agreement.  With respect tosuch litigations, Wells Fargo Bank believes plaintiffs' claims are withoutmerit and intends to contest the claims vigorously, but there can be noassurances as to the outcome of the litigations or the possible impact of thelitigations on Wells Fargo Bank or the RMBS trusts.

**Item 1119 of Regulation AB, Affiliations and CertainRelationships and Related Transactions.**

The information regarding this Item has been previouslyprovided in the prospectus of the Registrant relating to the issuing entityfiled on June 29, 2017 pursuant to Rule 424(b)(2).

**Item 1122 of Regulation AB, Compliance with ApplicableServicing Criteria.**

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the mortgage loans are attachedhereto under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit AAto the Pooling and Servicing Agreement incorporated by reference as Exhibit 4.1to this Annual Report on Form 10-K is a chart identifying the entitiesparticipating in a servicing function for the transaction responsible for eachapplicable servicing criteria set forth in Item 1122(d).

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the 245 Park Avenue Mortgage Loan,which is being serviced and administered pursuant to the trust and servicingagreement for the 245 Park Avenue Trust 2017-245P Transaction, are attachedhereto under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit Lto the trust and servicing agreement for the 245 Park Avenue Trust 2017-245PTransaction incorporated by reference as Exhibit 4.2 to this Annual Report onForm 10-K is a chart identifying the entities participating in a servicingfunction for the 245 Park Avenue Trust 2017-245P Transaction responsible foreach applicable servicing criteria set forth in Item 1122(d).

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the Acropolis Garden Mortgage Loan,which is being serviced and administered pursuant to the pooling and servicingagreement for the CSAIL 2017-CX9 Transaction, are attached hereto under Item 15to this Annual Report on Form 10-K. Attached as Exhibit AA to the pooling andservicing agreement for the CSAIL 2017-CX9 Transaction incorporated byreference as Exhibit 4.3 to this Annual Report on Form 10-K is a chartidentifying the entities participating in a servicing function for the CSAIL2017-CX9 Transaction responsible for each applicable servicing criteria setforth in Item 1122(d).

The reports on assessments of compliance with the servicingcriteria for asset-backed securities and related attestation reports on suchassessments of compliance with respect to the Garden Multifamily PortfolioMortgage Loan, which is being serviced and administered pursuant to the poolingand servicing agreement for the CSAIL 2017-CX10 Transaction, are attachedhereto under Item 15 to this Annual Report on Form 10-K. Attached as Exhibit AAto the pooling and servicing agreement for the CSAIL 2017-CX10 Transactionincorporated by reference as Exhibit 4.4 to this Annual Report on Form 10-K isa chart identifying the entities participating in a servicing function for theCSAIL 2017-CX10 Transaction responsible for each applicable servicing criteriaset forth in Item 1122(d).

The report on assessment of compliance with applicableservicing criteria furnished pursuant to Item 1122 of Regulation AB by MidlandLoan Services, a Division of PNC Bank National Association (“Midland”)discloses that a material instance of noncompliance occurred, as describedbelow:

Material Instance of Noncompliance

In certain instances, the ScheduleAL Files (Item 1125 of Regulation AB) were not reported in accordance with theterms specified in the transaction agreements, in conflict with Item1122(d)(3)(i): “Reports to investors, including those to be filed with theCommission, are maintained in accordance with the transaction agreements andapplicable Commission requirements. Specifically, such reports: (A) Areprepared in accordance with timeframes and other terms set forth in thetransaction agreements”.  The noncompliance consisted of omitted orinaccurately reported fields as described in (1) and (2) below.  (1) Inconnection with other enhancements Midland made to its manual Schedule ALprocess, starting in April 2019, Midland developed and implemented new ScheduleAL reporting templates for each applicable CMBS transaction that closed priorto April 2019 and for each applicable CMBS transaction going forward. Related to this, Midland made certain template setup errors, along with relatedand other manual inputting of information errors, and the errors were notidentified prior to submission of the applicable Schedule AL Files in certaincases due to breakdowns in quality control.  (2) In one applicabletransaction, the related Schedule AL File for a given month was not saved properlyresulting in the prior month's Schedule AL File being submitted for the givenmonth instead of the correct Schedule AL File. 

The identified instances did notinvolve the servicing of assets included in this securitization.

Steps Taken to Remedy the Material Instance of Noncompliance

Midland’s Schedule AL reportingprocess was enhanced in April of 2019, however, the process remained manualthroughout the 2019 calendar year.  Errors relating to certain Schedule ALFiles during 2019 were identified during the related audit.  Followingidentification, Midland made staffing changes and additional enhancements andimprovements to its processes and procedures to support its Schedule ALreporting obligations and expects to move to an automated solution for thisprocess.  

Midland is currently remediating theSchedule AL reporting for certain of the CMBS transactions found to beincorrect.

**Item 1123 of Regulation AB, Servicer Compliance Statement.**

The servicer compliance statements are attached as Exhibitsto this Annual Report on Form 10-K.

**PART IV**

**Item 15. Exhibits, Financial Statement Schedules**

(a) The following is a list of documents filed as part ofthis Annual Report on Form 10-K:

(1) Not applicable

(2) Not applicable

(3) See below

 

4.1          Poolingand Servicing Agreement, dated as of June 1, 2017, among Credit SuisseCommercial Mortgage Securities Corp., as Depositor, Wells Fargo Bank, NationalAssociation, as Master Servicer, Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer, Wells Fargo Bank, NationalAssociation, as Certificate Administrator, Wilmington Trust, NationalAssociation, as Trustee and Park Bridge Lender Services LLC, as OperatingAdvisor and as Asset Representation Reviewer (filed as Exhibit 4.1 to theregistrant’s Current Report on Form 8-K filed on June 29, 2017 under CommissionFile No. 333-207361-05 and incorporated by reference herein).

4.2          Trustand Servicing Agreement, dated as of May 30, 2017, among J.P. Morgan ChaseCommercial Mortgage Securities Corp., as Depositor, Wells Fargo Bank, NationalAssociation, as Master Servicer, AEGON USA Realty Advisors, LLC, as SpecialServicer, Wells Fargo Bank, National Association, as Certificate Administrator,Wilmington Trust, National Association, as Trustee and Trimont Real EstateAdvisors, LLC, as Operating Advisor (filed as Exhibit 4.2 to the registrant’sCurrent Report on Form 8-K filed on June 29, 2017 under Commission File No.333-207361-05 and incorporated by reference herein).

4.3          Poolingand Servicing Agreement, dated as of September 1, 2017, among Credit SuisseCommercial Mortgage Securities Corp., as Depositor, KeyBank NationalAssociation, as Master Servicer, Rialto Capital Advisors, LLC, as SpecialServicer, Wells Fargo Bank, National Association, as Certificate Administratorand as Trustee and Pentalpha Surveillance LLC, as Operating Advisor and asAsset Representation Reviewer (filed as Exhibit 4.1 to the registrant’s CurrentReport on Form 8-K filed on October 24, 2017 under Commission File No.333-207361-05 and incorporated by reference herein).

4.4          Poolingand Servicing Agreement, dated as of November 1, 2017, among Credit SuisseCommercial Mortgage Securities Corp., as Depositor, KeyBank NationalAssociation, as Master Servicer, CWCapital Asset Management LLC, as SpecialServicer, Wells Fargo Bank, National Association, as Certificate Administratorand as Trustee and Park Bridge Lender Services LLC, as Operating Advisor and asAsset Representation Reviewer (filed as Exhibit 4.1 to the registrant’s CurrentReport on Form 8-K filed on December 5, 2017 under Commission File No.333-207361-05 and incorporated by reference herein).

4.5          Co-LenderAgreement, dated as of June 13, 2017, by and between Natixis Real EstateCapital LLC, as Initial Note A-A-1 Holder, Natixis Real Estate Capital LLC, asInitial Note A-A-2 Holder, Natixis Real Estate Capital LLC, as Initial NoteA-A-3 Holder, Natixis Real Estate Capital LLC, as Initial Note A-B Holder,Natixis Real Estate Capital LLC, as Initial Note B-A Holder and Natixis RealEstate Capital LLC, as Initial Note B-B Holder (filed as Exhibit 4.3 to theregistrant’s Current Report on Form 8-K filed on June 29, 2017 under CommissionFile No. 333-207361-05 and incorporated by reference herein).

4.6          Co-LenderAgreement, dated as of May 30, 2017, by and among JPMorgan Chase Bank, NationalAssociation, as Initial Note 1 Holder, Natixis Real Estate Capital LLC, asInitial Note 2 Holder, Deutsche Bank, AG, New York Branch, as Initial Note 3Holder, Société Générale, as Initial Note 4 Holder and Barclays Bank PLC, asInitial Note 5 Holder (filed as Exhibit 4.4 to the registrant’s Current Reporton Form 8-K filed on June 29, 2017 under Commission File No. 333-207361-05 andincorporated by reference herein).

4.7          Amendedand Restated Co-Lender Agreement, dated as of May 10, 2017, by and betweenNatixis Real Estate Capital LLC, as Note A-1 Holder, Natixis Real EstateCapital LLC, as Note A-2 Holder and Koramco US Debt Strategy Private RealEstate Investment Trust No. 3, as Junior Noteholder (filed as Exhibit 4.5 tothe registrant’s Current Report on Form 8-K filed on June 29, 2017 underCommission File No. 333-207361-05 and incorporated by reference herein).

4.8          Amendedand Restated Co-Lender Agreement, dated as of April 18, 2017, by and betweenNatixis Real Estate Capital LLC, as Note A-1 Holder, Natixis Real EstateCapital LLC, as Note A-2 Holder and Hangang US Real Estate Fund No. 1, asJunior Noteholder (filed as Exhibit 4.6 to the registrant’s Current Report onForm 8-K filed on June 29, 2017 under Commission File No. 333-207361-05 andincorporated by reference herein).

4.9          Co-LenderAgreement, dated as of April 18, 2017, between Natixis Real Estate Capital LLC,as Note A-1 Holder and Natixis Real Estate Capital LLC, as Note A-2 Holder(filed as Exhibit 4.7 to the registrant’s Current Report on Form 8-K filed onJune 29, 2017 under Commission File No. 333-207361-05 and incorporated byreference herein).

4.10        Co-LenderAgreement, dated as of June 29, 2017, between Benefit Street Partners CREFinance LLC, as Note A-1 Holder and Benefit Street Partners CRE Finance LLC, asNote A-2 Holder and Benefit Street Partners CRE Finance LLC, as Note A-3 Holder(filed as Exhibit 4.8 to the registrant’s Current Report on Form 8-K filed onJune 29, 2017 under Commission File No. 333-207361-05 and incorporated byreference herein).

4.11        Co-LenderAgreement, dated as of June 29, 2017, between Benefit Street Partners CREFinance LLC, as Note A-1 Holder and Benefit Street Partners CRE Finance LLC, asNote A-2 Holder (filed as Exhibit 4.9 to the registrant’s Current Report onForm 8-K filed on June 29, 2017 under Commission File No. 333-207361-05 andincorporated by reference herein).

4.12        Co-LenderAgreement, dated as of June 29, 2017, between Natixis Real Estate Capital LLC,as Note A-1 Holder and Natixis Real Estate Capital LLC as Note A-2 Holder(filed as Exhibit 4.10 to the registrant’s Current Report on Form 8-K filed onJune 29, 2017 under Commission File No. 333-207361-05 and incorporated byreference herein).

4.13        Co-LenderAgreement, dated as of June 29, 2017, between Benefit Street Partners CREFinance LLC, as Note A-1 Holder and Benefit Street Partners CRE Finance LLC, asNote A-2 Holder (filed as Exhibit 4.11 to the registrant’s Current Report onForm 8-K filed on June 29, 2017 under Commission File No. 333-207361-05 andincorporated by reference herein).

4.14        Co-LenderAgreement, dated as of June 29, 2017, between Natixis Real Estate Capital LLC,as Note A-1 Holder and Natixis Real Estate Capital LLC, as Note A-2 Holder(filed as Exhibit 4.13 to the registrant’s Current Report on Form 8-K filed onJune 29, 2017 under Commission File No. 333-207361-05 and incorporated byreference herein).

4.15        Amendedand Restated Co-Lender Agreement, dated as of November 30, 3017, betweenBenefit Street Partners CRE Finance LLC, as Note A-1 Holder, Wilmington Trust,National Association, as trustee for the benefit of the registered holders ofthe CSAIL Commercial Mortgage Securities Trust 2017-C8, Commercial MortgagePass-Through Certificates, Series 2017-C8, as Note A-2 Holder, Benefit StreetPartners CRE Finance LLC, as Note A-3 Holder, Benefit Street Partners CREFinance LLC, as Note A-4 Holder, Benefit Street Partners CRE Finance LLC, asNote A-5 Holder and Benefit Street Partners CRE Finance LLC, as Note A-6 Holder(filed as Exhibit 4.12 to the registrant’s Current Report on Form-8-K filed onDecember 5, 2017 under Commission File No. 333-207361-05 and incorporated byreference herein).

31          Rule 13a-14(d)/15d-14(d)Certifications.

33          Reports on assessment of compliance with servicing criteria for asset-backedsecurities.

33.1       Wells Fargo Bank, NationalAssociation, as Master Servicer

33.2       Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer

33.3       Wilmington Trust, National Association, as Trustee (Omitted. See ExplanatoryNotes.)

33.4       Wells Fargo Bank, NationalAssociation, as Certificate Administrator

33.5       Wells Fargo Bank, NationalAssociation, as Custodian

33.6       Park Bridge LenderServices LLC, as Operating Advisor

33.7       CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant

33.8       National Tax Search, LLC,as Servicing Function Participant

33.9       Wells Fargo Bank, NationalAssociation, as Primary Servicer of the 85 Broad Street Mortgage Loan (seeExhibit 33.1)

33.10     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the 85 BroadStreet Mortgage Loan (see Exhibit 33.2)

33.11     Wilmington Trust, National Association, as Trustee of the 85 Broad StreetMortgage Loan (Omitted. See Explanatory Notes.)

33.12     Wells Fargo Bank, NationalAssociation, as Custodian of the 85 Broad Street Mortgage Loan (see Exhibit 33.5)

33.13     Park Bridge LenderServices LLC, as Operating Advisor of the 85 Broad Street Mortgage Loan (seeExhibit 33.6)

33.14     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the 85 Broad StreetMortgage Loan (see Exhibit 33.7)

33.15     National Tax Search, LLC,as Servicing Function Participant of the 85 Broad Street Mortgage Loan (seeExhibit 33.8)

33.16     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Apple Sunnyvale Mortgage Loan (seeExhibit 33.1)

33.17     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the AppleSunnyvale Mortgage Loan (see Exhibit 33.2)

33.18     Wilmington Trust, National Association, as Trustee of the Apple SunnyvaleMortgage Loan (Omitted. See Explanatory Notes.)

33.19     Wells Fargo Bank, NationalAssociation, as Custodian of the Apple Sunnyvale Mortgage Loan (see Exhibit33.5)

33.20     Park Bridge LenderServices LLC, as Operating Advisor of the Apple Sunnyvale Mortgage Loan (seeExhibit 33.6)

33.21     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Apple SunnyvaleMortgage Loan (see Exhibit 33.7)

33.22     National Tax Search, LLC,as Servicing Function Participant of the Apple Sunnyvale Mortgage Loan (seeExhibit 33.8)

33.23     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Broadway Portfolio Mortgage Loan (seeExhibit 33.1)

33.24     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the BroadwayPortfolio Mortgage Loan (see Exhibit 33.2)

33.25     Wilmington Trust, National Association, as Trustee of the Broadway PortfolioMortgage Loan (Omitted. See Explanatory Notes.)

33.26     Wells Fargo Bank, NationalAssociation, as Custodian of the Broadway Portfolio Mortgage Loan (see Exhibit33.5)

33.27     Park Bridge LenderServices LLC, as Operating Advisor of the Broadway Portfolio Mortgage Loan (seeExhibit 33.6)

33.28     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the BroadwayPortfolio Mortgage Loan (see Exhibit 33.7)

33.29     National Tax Search, LLC,as Servicing Function Participant of the Broadway Portfolio Mortgage Loan (seeExhibit 33.8)

33.30     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Urban Union Amazon Mortgage Loan (seeExhibit 33.1)

33.31     Midland Loan Services, a Divisionof PNC Bank, National Association, as Special Servicer of the Urban UnionAmazon Mortgage Loan (see Exhibit 33.2)

33.32     Wilmington Trust, National Association, as Trustee of the Urban Union AmazonMortgage Loan (Omitted. See Explanatory Notes.)

33.33     Wells Fargo Bank, NationalAssociation, as Custodian of the Urban Union Amazon Mortgage Loan (see Exhibit33.5)

33.34     Park Bridge LenderServices LLC, as Operating Advisor of the Urban Union Amazon Mortgage Loan (seeExhibit 33.6)

33.35     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Urban UnionAmazon Mortgage Loan (see Exhibit 33.7)

33.36     National Tax Search, LLC,as Servicing Function Participant of the Urban Union Amazon Mortgage Loan (seeExhibit 33.8)

33.37     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the St. Luke's Office Mortgage Loan (seeExhibit 33.1)

33.38     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the St.Luke's Office Mortgage Loan (see Exhibit 33.2)

33.39     Wilmington Trust, National Association, as Trustee of the St. Luke's OfficeMortgage Loan (Omitted. See Explanatory Notes.)

33.40     Wells Fargo Bank, NationalAssociation, as Custodian of the St. Luke's Office Mortgage Loan (see Exhibit33.5)

33.41     Park Bridge LenderServices LLC, as Operating Advisor of the St. Luke's Office Mortgage Loan (seeExhibit 33.6)

33.42     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the St. Luke'sOffice Mortgage Loan (see Exhibit 33.7)

33.43     National Tax Search, LLC,as Servicing Function Participant of the St. Luke's Office Mortgage Loan (seeExhibit 33.8)

33.44     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Columbus Office Portfolio I MortgageLoan (see Exhibit 33.1)

33.45     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the ColumbusOffice Portfolio I Mortgage Loan (see Exhibit 33.2)

33.46     Wilmington Trust, National Association, as Trustee of the Columbus Office PortfolioI Mortgage Loan (Omitted. See Explanatory Notes.)

33.47     Wells Fargo Bank, NationalAssociation, as Custodian of the Columbus Office Portfolio I Mortgage Loan (seeExhibit 33.5)

33.48     Park Bridge LenderServices LLC, as Operating Advisor of the Columbus Office Portfolio I MortgageLoan (see Exhibit 33.6)

33.49     CoreLogic Commercial Real EstateServices, Inc., as Servicing Function Participant of the Columbus OfficePortfolio I Mortgage Loan (see Exhibit 33.7)

33.50     National Tax Search, LLC,as Servicing Function Participant of the Columbus Office Portfolio I MortgageLoan (see Exhibit 33.8)

33.51     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Alexandria Corporate Park Mortgage Loan(see Exhibit 33.1)

33.52     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of theAlexandria Corporate Park Mortgage Loan (see Exhibit 33.2)

33.53     Wilmington Trust, National Association, as Trustee of the Alexandria CorporatePark Mortgage Loan (Omitted. See Explanatory Notes.)

33.54     Wells Fargo Bank, NationalAssociation, as Custodian of the Alexandria Corporate Park Mortgage Loan (seeExhibit 33.5)

33.55     Park Bridge LenderServices LLC, as Operating Advisor of the Alexandria Corporate Park MortgageLoan (see Exhibit 33.6)

33.56     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the AlexandriaCorporate Park Mortgage Loan (see Exhibit 33.7)

33.57     National Tax Search, LLC,as Servicing Function Participant of the Alexandria Corporate Park MortgageLoan (see Exhibit 33.8)

33.58     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Marble Hall Gardens Mortgage Loan (seeExhibit 33.1)

33.59     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the MarbleHall Gardens Mortgage Loan (see Exhibit 33.2)

33.60     Wilmington Trust, National Association, as Trustee of the Marble Hall GardensMortgage Loan (Omitted. See Explanatory Notes.)

33.61     Wells Fargo Bank, NationalAssociation, as Custodian of the Marble Hall Gardens Mortgage Loan (see Exhibit33.5)

33.62     Park Bridge LenderServices LLC, as Operating Advisor of the Marble Hall Gardens Mortgage Loan(see Exhibit 33.6)

33.63     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Marble HallGardens Mortgage Loan (see Exhibit 33.7)

33.64     National Tax Search, LLC,as Servicing Function Participant of the Marble Hall Gardens Mortgage Loan (seeExhibit 33.8)

33.65     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the 245 Park Avenue Mortgage Loan (seeExhibit 33.1)

33.66     AEGON USA RealtyAdvisors, LLC, as Special Servicer of the 245 Park Avenue Mortgage Loan

33.67     Wilmington Trust, National Association, as Trustee of the 245 Park AvenueMortgage Loan (Omitted. See Explanatory Notes.)

33.68     Wells Fargo Bank, NationalAssociation, as Custodian of the 245 Park Avenue Mortgage Loan (see Exhibit33.5)

33.69     Trimont Real Estate Advisors,LLC, as Operating Advisor of the 245 Park Avenue Mortgage Loan

33.70     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the 245 Park AvenueMortgage Loan (see Exhibit 33.7)

33.71     National Tax Search, LLC,as Servicing Function Participant of the 245 Park Avenue Mortgage Loan (seeExhibit 33.8)

33.72     KeyBank National Association, as Primary Servicer of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

33.73     Rialto Capital Advisors, LLC, as Special Servicer of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

33.74     Wells Fargo Bank, National Association, as Trustee of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

33.75     Wells Fargo Bank, NationalAssociation, as Custodian of the Acropolis Garden Mortgage Loan (see Exhibit33.5)

33.76     Pentalpha Surveillance LLC, as Operating Advisor of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

33.77     KeyBank National Association, as Primary Servicer of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.78     CWCapital Asset Management LLC, as Special Servicer of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.79     Wells Fargo Bank, National Association, as Trustee of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

33.80     Wells Fargo Bank, NationalAssociation, as Custodian of the Garden Multifamily Portfolio Mortgage Loan(see Exhibit 33.5)

33.81     Park Bridge LenderServices LLC, as Operating Advisor of the Garden Multifamily Portfolio MortgageLoan (see Exhibit 33.6)

34          Attestation reports onassessment of compliance with servicing criteria for asset-backed securities.

34.1       Wells Fargo Bank, NationalAssociation, as Master Servicer

34.2       Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer

34.3       Wilmington Trust, National Association, as Trustee (Omitted. See ExplanatoryNotes.)

34.4       Wells Fargo Bank, NationalAssociation, as Certificate Administrator

34.5       Wells Fargo Bank, NationalAssociation, as Custodian

34.6       Park Bridge LenderServices LLC, as Operating Advisor

34.7       CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant

34.8       National Tax Search, LLC,as Servicing Function Participant

34.9       Wells Fargo Bank, NationalAssociation, as Primary Servicer of the 85 Broad Street Mortgage Loan (seeExhibit 34.1)

34.10     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the 85 BroadStreet Mortgage Loan (see Exhibit 34.2)

34.11     Wilmington Trust, National Association, as Trustee of the 85 Broad StreetMortgage Loan (Omitted. See Explanatory Notes.)

34.12     Wells Fargo Bank, NationalAssociation, as Custodian of the 85 Broad Street Mortgage Loan (see Exhibit 34.5)

34.13     Park Bridge LenderServices LLC, as Operating Advisor of the 85 Broad Street Mortgage Loan (seeExhibit 34.6)

34.14     CoreLogic Commercial Real EstateServices, Inc., as Servicing Function Participant of the 85 Broad StreetMortgage Loan (see Exhibit 34.7)

34.15     National Tax Search, LLC,as Servicing Function Participant of the 85 Broad Street Mortgage Loan (seeExhibit 34.8)

34.16     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Apple Sunnyvale Mortgage Loan (seeExhibit 34.1)

34.17     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the AppleSunnyvale Mortgage Loan (see Exhibit 34.2)

34.18     Wilmington Trust, National Association, as Trustee of the Apple SunnyvaleMortgage Loan (Omitted. See Explanatory Notes.)

34.19     Wells Fargo Bank, NationalAssociation, as Custodian of the Apple Sunnyvale Mortgage Loan (see Exhibit34.5)

34.20     Park Bridge LenderServices LLC, as Operating Advisor of the Apple Sunnyvale Mortgage Loan (seeExhibit 34.6)

34.21     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Apple SunnyvaleMortgage Loan (see Exhibit 34.7)

34.22     National Tax Search, LLC,as Servicing Function Participant of the Apple Sunnyvale Mortgage Loan (seeExhibit 34.8)

34.23     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Broadway Portfolio Mortgage Loan (seeExhibit 34.1)

34.24     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the BroadwayPortfolio Mortgage Loan (see Exhibit 34.2)

34.25     Wilmington Trust, National Association, as Trustee of the Broadway PortfolioMortgage Loan (Omitted. See Explanatory Notes.)

34.26     Wells Fargo Bank, NationalAssociation, as Custodian of the Broadway Portfolio Mortgage Loan (see Exhibit34.5)

34.27     Park Bridge LenderServices LLC, as Operating Advisor of the Broadway Portfolio Mortgage Loan (seeExhibit 34.6)

34.28     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the BroadwayPortfolio Mortgage Loan (see Exhibit 34.7)

34.29     National Tax Search, LLC,as Servicing Function Participant of the Broadway Portfolio Mortgage Loan (seeExhibit 34.8)

34.30     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Urban Union Amazon Mortgage Loan (seeExhibit 34.1)

34.31     Midland Loan Services, a Divisionof PNC Bank, National Association, as Special Servicer of the Urban UnionAmazon Mortgage Loan (see Exhibit 34.2)

34.32     Wilmington Trust, National Association, as Trustee of the Urban Union AmazonMortgage Loan (Omitted. See Explanatory Notes.)

34.33     Wells Fargo Bank, NationalAssociation, as Custodian of the Urban Union Amazon Mortgage Loan (see Exhibit34.5)

34.34     Park Bridge LenderServices LLC, as Operating Advisor of the Urban Union Amazon Mortgage Loan (seeExhibit 34.6)

34.35     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Urban UnionAmazon Mortgage Loan (see Exhibit 34.7)

34.36     National Tax Search, LLC,as Servicing Function Participant of the Urban Union Amazon Mortgage Loan (seeExhibit 34.8)

34.37     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the St. Luke's Office Mortgage Loan (seeExhibit 34.1)

34.38     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the St.Luke's Office Mortgage Loan (see Exhibit 34.2)

34.39     Wilmington Trust, National Association, as Trustee of the St. Luke's OfficeMortgage Loan (Omitted. See Explanatory Notes.)

34.40     Wells Fargo Bank, NationalAssociation, as Custodian of the St. Luke's Office Mortgage Loan (see Exhibit34.5)

34.41     Park Bridge LenderServices LLC, as Operating Advisor of the St. Luke's Office Mortgage Loan (seeExhibit 34.6)

34.42     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the St. Luke'sOffice Mortgage Loan (see Exhibit 34.7)

34.43     National Tax Search, LLC,as Servicing Function Participant of the St. Luke's Office Mortgage Loan (seeExhibit 34.8)

34.44     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Columbus Office Portfolio I MortgageLoan (see Exhibit 34.1)

34.45     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the ColumbusOffice Portfolio I Mortgage Loan (see Exhibit 34.2)

34.46     Wilmington Trust, National Association, as Trustee of the Columbus Office PortfolioI Mortgage Loan (Omitted. See Explanatory Notes.)

34.47     Wells Fargo Bank, NationalAssociation, as Custodian of the Columbus Office Portfolio I Mortgage Loan (seeExhibit 34.5)

34.48     Park Bridge LenderServices LLC, as Operating Advisor of the Columbus Office Portfolio I MortgageLoan (see Exhibit 34.6)

34.49     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Columbus OfficePortfolio I Mortgage Loan (see Exhibit 34.7)

34.50     National Tax Search, LLC,as Servicing Function Participant of the Columbus Office Portfolio I MortgageLoan (see Exhibit 34.8)

34.51     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Alexandria Corporate Park Mortgage Loan(see Exhibit 34.1)

34.52     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of theAlexandria Corporate Park Mortgage Loan (see Exhibit 34.2)

34.53     Wilmington Trust, National Association, as Trustee of the Alexandria CorporatePark Mortgage Loan (Omitted. See Explanatory Notes.)

34.54     Wells Fargo Bank, NationalAssociation, as Custodian of the Alexandria Corporate Park Mortgage Loan (seeExhibit 34.5)

34.55     Park Bridge LenderServices LLC, as Operating Advisor of the Alexandria Corporate Park MortgageLoan (see Exhibit 34.6)

34.56     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the AlexandriaCorporate Park Mortgage Loan (see Exhibit 34.7)

34.57     National Tax Search, LLC,as Servicing Function Participant of the Alexandria Corporate Park MortgageLoan (see Exhibit 34.8)

34.58     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Marble Hall Gardens Mortgage Loan (seeExhibit 34.1)

34.59     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the MarbleHall Gardens Mortgage Loan (see Exhibit 34.2)

34.60     Wilmington Trust, National Association, as Trustee of the Marble Hall GardensMortgage Loan (Omitted. See Explanatory Notes.)

34.61     Wells Fargo Bank, NationalAssociation, as Custodian of the Marble Hall Gardens Mortgage Loan (see Exhibit34.5)

34.62     Park Bridge LenderServices LLC, as Operating Advisor of the Marble Hall Gardens Mortgage Loan(see Exhibit 34.6)

34.63     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the Marble HallGardens Mortgage Loan (see Exhibit 34.7)

34.64     National Tax Search, LLC,as Servicing Function Participant of the Marble Hall Gardens Mortgage Loan (seeExhibit 34.8)

34.65     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the 245 Park Avenue Mortgage Loan (seeExhibit 34.1)

34.66     AEGON USA RealtyAdvisors, LLC, as Special Servicer of the 245 Park Avenue Mortgage Loan

34.67     Wilmington Trust, National Association, as Trustee of the 245 Park AvenueMortgage Loan (Omitted. See Explanatory Notes.)

34.68     Wells Fargo Bank, NationalAssociation, as Custodian of the 245 Park Avenue Mortgage Loan (see Exhibit34.5)

34.69     Trimont Real Estate Advisors,LLC, as Operating Advisor of the 245 Park Avenue Mortgage Loan

34.70     CoreLogic Commercial RealEstate Services, Inc., as Servicing Function Participant of the 245 Park AvenueMortgage Loan (see Exhibit 34.7)

34.71     National Tax Search, LLC,as Servicing Function Participant of the 245 Park Avenue Mortgage Loan (seeExhibit 34.8)

34.72     KeyBank National Association, as Primary Servicer of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

34.73     Rialto Capital Advisors, LLC, as Special Servicer of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

34.74     Wells Fargo Bank, National Association, as Trustee of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

34.75     Wells Fargo Bank, NationalAssociation, as Custodian of the Acropolis Garden Mortgage Loan (see Exhibit34.5)

34.76     Pentalpha Surveillance LLC, as Operating Advisor of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

34.77     KeyBank National Association, as Primary Servicer of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.78     CWCapital Asset Management LLC, as Special Servicer of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.79     Wells Fargo Bank, National Association, as Trustee of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

34.80     Wells Fargo Bank, NationalAssociation, as Custodian of the Garden Multifamily Portfolio Mortgage Loan(see Exhibit 34.5)

34.81     Park Bridge LenderServices LLC, as Operating Advisor of the Garden Multifamily Portfolio MortgageLoan (see Exhibit 34.6)

35          Servicer compliance statements.

35.1       Wells Fargo Bank, NationalAssociation, as Master Servicer

35.2       Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer

35.3       Wells Fargo Bank, NationalAssociation, as Certificate Administrator

35.4       Wells Fargo Bank, NationalAssociation, as Primary Servicer of the 85 Broad Street Mortgage Loan (seeExhibit 35.1)

35.5       Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the 85 BroadStreet Mortgage Loan (see Exhibit 35.2)

35.6       Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Apple Sunnyvale Mortgage Loan (seeExhibit 35.1)

35.7       Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the AppleSunnyvale Mortgage Loan (see Exhibit 35.2)

35.8       Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Broadway Portfolio Mortgage Loan (seeExhibit 35.1)

35.9       Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the BroadwayPortfolio Mortgage Loan (see Exhibit 35.2)

35.10     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Urban Union Amazon Mortgage Loan (seeExhibit 35.1)

35.11     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the UrbanUnion Amazon Mortgage Loan (see Exhibit 35.2)

35.12     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the St. Luke's Office Mortgage Loan (seeExhibit 35.1)

35.13     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the St.Luke's Office Mortgage Loan (see Exhibit 35.2)

35.14     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Columbus Office Portfolio I MortgageLoan (see Exhibit 35.1)

35.15     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the ColumbusOffice Portfolio I Mortgage Loan (see Exhibit 35.2)

35.16     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Alexandria Corporate Park Mortgage Loan(see Exhibit 35.1)

35.17     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of theAlexandria Corporate Park Mortgage Loan (see Exhibit 35.2)

35.18     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the Marble Hall Gardens Mortgage Loan (seeExhibit 35.1)

35.19     Midland Loan Services, aDivision of PNC Bank, National Association, as Special Servicer of the MarbleHall Gardens Mortgage Loan (see Exhibit 35.2)

35.20     Wells Fargo Bank, NationalAssociation, as Primary Servicer of the 245 Park Avenue Mortgage Loan (seeExhibit 35.1)

35.21     AEGON USA Realty Advisors, LLC, as Special Servicer of the 245 Park AvenueMortgage Loan (Omitted. See Explanatory Notes.)

35.22     KeyBank National Association, as Primary Servicer of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

35.23     Rialto Capital Advisors, LLC, as Special Servicer of the Acropolis GardenMortgage Loan (Omitted. See Explanatory Notes.)

35.24     KeyBank National Association, as Primary Servicer of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

35.25     CWCapital Asset Management LLC, as Special Servicer of the Garden MultifamilyPortfolio Mortgage Loan (Omitted. See Explanatory Notes.)

99.1        MortgageLoan Purchase Agreement, dated as of June 21, 2017, between Credit SuisseCommercial Mortgage Securities Corp. and Column Financial, Inc. (filed asExhibit 99.1 to the registrant’s Current Report on Form 8-K filed on June 29,2017 under Commission File No. 333-207361-05 and incorporated by referenceherein)

99.2        MortgageLoan Purchase Agreement, dated as of June 21, 2017, between Credit SuisseCommercial Mortgage Securities Corp. and Natixis Real Estate Capital LLC (filedas Exhibit 99.2 to the registrant’s Current Report on Form 8-K filed on June29, 2017 under Commission File No 333-207361-05 and incorporated by referenceherein)

99.3        MortgageLoan Purchase Agreement, dated as of June 21, 2017, between Credit SuisseCommercial Mortgage Securities Corp. and Benefit Street Partners CRE FinanceLLC (filed as Exhibit 99.3 to the registrant’s Current Report on Form 8-K filedon June 29, 2017 under Commission File No. 333-207361-05 and incorporated by referenceherein)

(b)   The exhibits required to be filed by theRegistrant pursuant to Item 601 of Regulation S-K are listed above.

(c)   Not Applicable.

 

**SIGNATURES**

Pursuant to the requirements of Section 13 or 15(d) of theSecurities Exchange Act of 1934, the registrant has duly caused this report tobe signed on its behalf by the undersigned, thereunto duly authorized.

Credit Suisse Commercial MortgageSecurities Corp.(Depositor)

/s/ OliverNisenson

OliverNisenson, Director

(senior officer in charge of securitizationof the depositor)

Date: March 16, 2020