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

 

 

I, Lawrence Chun, certify that:

 

1. I have reviewed this report on Form 10-K and all reportson Form 10-D required to be filed in respect of the period covered by thisreport on Form 10-K of the CSAIL 2017-CX9 Commercial Mortgage Trust (the"Exchange Act periodic reports");

 

2. Based on my knowledge, the Exchange Act periodicreports, taken as a whole, do not contain any untrue statement of a materialfact or omit to state a material fact necessary to make the statements made, inlight of the circumstances under which such statements were made, notmisleading with respect to the period covered by this report;

 

3. Based on my knowledge, all of the distribution,servicing and other information required to be provided under Form 10-D for theperiod covered by this report is included in the Exchange Act periodic reports;

 

4. Based on my knowledge and the servicer compliancestatements required in this report under Item 1123 of Regulation AB, and exceptas disclosed in the Exchange Act periodic reports, the servicers have fulfilledtheir obligations under the servicing agreements in all material respects; and

 

5. All of the reports on assessment of compliance withservicing criteria for asset-backed securities and their related attestationreports on assessment of compliance with servicing criteria for asset-backedsecurities required to be included in this report in accordance with Item 1122of Regulation AB and Exchange Act Rules 13a-18 and 15d-18 have been included asan exhibit to

this report, except as otherwise disclosed in this report.Any material instances of noncompliance described in such reports have beendisclosed in this report on Form 10-K.

 

In giving the certifications above, I have reasonablyrelied on information provided to me by the following unaffiliated parties:

 

KeyBank National Association, as Master Servicer, RialtoCapital Advisors, LLC, as Special Servicer, Wells Fargo Bank, NationalAssociation, as Trustee and Certificate Administrator, Wells Fargo Bank,National Association, as Custodian, Pentalpha Surveillance LLC, as OperatingAdvisor, Computershare Trust Company, National Association, as ServicingFunction Participant for the Certificate Administrator, Computershare TrustCompany, National Association, as Servicing Function Participant for theCustodian, Wells Fargo Bank, National Association, asPrimary Servicer for the 245 Park Avenue Mortgage Loan, Situs Holdings, LLC, asSpecial Servicer for the 245 Park Avenue Mortgage Loan, Wilmington Trust,National Association, as Trustee for the 245 Park Avenue Mortgage Loan, WellsFargo Bank, National Association, as Custodian for the 245 Park Avenue MortgageLoan, BellOak, LLC, as Operating Advisor for the 245 Park Avenue Mortgage Loan,CoreLogic Solutions, LLC, as Servicing Function Participant for the 245 ParkAvenue Mortgage Loan, Computershare Trust Company, National Association,as Servicing Function Participant for the Custodian for the 245 Park Avenue Mortgage Loan, Wells Fargo Bank, National Association, as Primary Servicerfor the 85 Broad Street Mortgage Loan, Midland Loan Services, a Division of PNCBank, National Association, as Special Servicer for the 85 Broad StreetMortgage Loan, Wilmington Trust, National Association, as Trustee for the 85Broad Street Mortgage Loan, Wells Fargo Bank, National Association, asCustodian for the 85 Broad Street Mortgage Loan, Park Bridge Lender ServicesLLC, as Operating Advisor for the 85 Broad Street Mortgage Loan, CoreLogicSolutions, LLC, as Servicing Function Participant for the 85 Broad StreetMortgage Loan, Computershare Trust Company, National Association, asServicing Function Participant for the Custodian for the 85 Broad Street Mortgage Loan, Wells Fargo Bank, National Association, as Primary Servicerfor the Westin Building Exchange Mortgage Loan, Rialto Capital Advisors, LLC,as Special Servicer for the Westin Building Exchange Mortgage Loan, WilmingtonTrust, National Association, as Trustee for the Westin Building ExchangeMortgage Loan, Wells Fargo Bank, National Association, as Custodian for theWestin Building Exchange Mortgage Loan, Pentalpha Surveillance LLC, as OperatingAdvisor for the Westin Building Exchange Mortgage Loan, CoreLogic Solutions,LLC, as Servicing Function Participant for the Westin Building ExchangeMortgage Loan, and Computershare Trust Company, National Association, asServicing Function Participant for the Custodian for the Westin Building Exchange Mortgage Loan.

 

 

 

Dated: March 11, 2024

 

 

/s/ Lawrence Chun

Lawrence Chun

Authorized Signatory

(senior officer in charge of securitization of thedepositor)