Locomotive Industry - 

Using Verify for Certification. 

Verify 11.00 Deployment

Environmental Protection Agency

Office of Transportation and Air Quality

Compliance Division

Office of Transportation and Air Quality 

EPA-420-B-12-069 

November 2012
Content

• Requirement to Begin 

Certification

• New Features

• Locomotive Process 

Overview

• CDX

• Maintaining Manufacturer 

Information

• Locomotive Home Page 

and Processes

• Submitting Certification 

Application

– General Dataset 

Information

– Existing Locomotive 

Datasets

– Uploading Compliance 

Documents

• MyCDX Inbox

• Request for Certificate

• System Administration 

Information

2 
New Features

• Models and part tab now has an option to upload 

Models/Parts data as a .csv file

• New certification processes added:

– Request new certificate

– Request a dataset report for a certificate request

– Obtain Pending Certificate Request report

– Delete Pending request for a Certificate or Summary 

Sheet data update

– Request dataset report or delete a previously submitted 

Locomotive Certification Information dataset

• New Lock and Unlock Feature

• Mouse over labels to see data element numbers

• New Processing Report

3 
Requirements to Begin

• All manufacturers must have an EPA 

manufacturer code.

– http://www.epa.gov/otaq/verify/mfr-code.htm

• All manufacturers must have a CDX 

account.

– http://www.epa.gov/otaq/verify/setup.htm

4 
Requirements to Begin, cont’d

• Computer, with

– Browser

• Internet Explorer 7 and 8

– Check browser pop-up settings to ensure CDX pop-ups 

are allowed.

• PDF Reader

– Other programs are helpful, but not required

• Spreadsheet Program

• Text Editor

5 
-Enter Locomotive Certification 

Information

-Submit the Dataset

- Submit Related Documents

Submit Request For Certificate:

 -Engine Family Name

 -Compliance Statements

Update Maintain Manufacturer Information (if necessary):

 -Company Addresses

 -Company Contacts

 -Test Labs

Log into Verify CDX Account

-MyCDX Home Page

 -CDX Inbox

Select Applicable Locomotive Certification 

Type:

 -Locomotive/Engine Certification Information

 -Idle Control System (only) Certification 

Information

 -Non-OEM Components Certification Information

Verify’s Locomotive Certification Process

6 
CDX – Manufacturers’ Portal

• Manufacturers interact with Verify through 

EPA’s CDX (Central Data Exchange) through 

their browser.

– https://cdx.epa.gov

• CDX provides

– User Registration/Authentication/Authorization

– Inbox (secure one-way communication)

– Data Submission Services

7 
CDX Manufacturer Processes 

• Submit or Change a Certification Information Submission 

(Application)

• Submit Related Compliance Documents

• Request a Certificate

• Request Reports (Datasets, Pending Certificate 

Requests)

• “Delete” (inactivate) Records (Datasets, Pending 

Certificate Requests)

• Receive Information via their CDX Inbox

8 
Verify/CDX Log-In

9 
Verify - MyCDX 

•All users should have at least three 

items displayed under the “Available 

Account Profiles” header:

-VERIFY: Locomotive 

-VERIFY: Upload Compliance 

Documents

-VERIFY: Maintain Manufacturer 

Information or

-VERIFY: View Manufacturer 

Information

•Contact the Verify Help 

Desk if these three profiles 

are not listed on your 

MyCDX page or if you need 

access to other account 

profiles 10
Maintain Manufacturer Information

•See separate presentation for details about Verify’s Maintain 

Manufacturer Information module of August 26, 2010. 

(http://www.epa.gov/otaq/verify/publications.htm#presentations) 

11
Main CDX Locomotive Page

12
Certification Information Submission

Start a new 

application 

Continue with 

a previously 

saved datatset 

Upload an 

XML file 

(dataset) 

Obtain a copy of 

an active dataset 

from Verify

“Delete” an 

Engine Family 

dataset 

13
Certification Information Submission

• Process Codes

– New Submission - File of information never provided to EPA before. 

Once a file is “accepted” by Verify any changes to it can no longer be 

submitted as a New Submission.

– FEL Change - Change in one or more Family Emission Limits in a 

previously submitted file.

– Running Change - Add or change an engine configuration in a 

certification application file for which a certificate has been issued for an 

engine in the current production model year.

– Correction - Amend an entry in a previously submitted file for a value 

that was wrong.

– Field Fix - Add or change an engine configuration in a certification 

application file for which a certificate has been issued for an engine 

outside the current production model year.

14
General Dataset Information

• See Data Requirements and Business Rules spreadsheets to review 

data element requirements. 

– http://www.epa.gov/otaq/verify/publications.htm

– Or click on the ?Help button in the upper right

• Holding the mouse pointer over a field label will cause the data 

element number to be displayed.

• Enter the data in the order of the tabs. Many choices in later tabs 

reflect early entries.

• Fields that are not optional for any user are marked with a red 

asterisk.

• Engine Family, on the General Information tab, is case sensitive

15
General Dataset Information, cont’d

• Selecting items in a drop down menu

– Mouse click an item to select or ‘de-select’ it

– Press the CTRL key and click additional items to select more than one

– Select an item, press the SHIFT key and click another item in the list to select all 

the items between the two. 

• An application created in the web forms should be saved as a local 

file. It can then be used as the starting point for another application.

• After an application has been submitted a processing report will be 

sent to the user’s CDX inbox.

• One can upload a processing report xml file back into the web forms to 

correct any issues or start a new submission

16
General Dataset Information, cont’d

• Multiple sessions of Verify should not be open at one time. 

• Without activity a user will be logged out of CDX after one hour. The 

timer is in the lower left of the screen.

17
General Dataset Information, cont’d

• Models and Parts CSV

– Manufacturers may choose to upload their models 

and parts as a Comma Separated Value (CSV) file

– This function was added as a convenience for 

manufacturers that have many Models and Parts to 

address performance issues.

– A spreadsheet program may be used to create the file

– A template is provided at: 

http://www.epa.gov/otaq/verify/publications.htm#locodata

18
General Dataset Information, cont’d

Models and Parts CSV, continued

19
General Dataset Information, cont’d

• After all data are entered in the form, click the “Review and Submit” 

button in the lower right of any tab.

20
General Dataset Information, cont’d

• The initial validation is performed. Any errors detected will appear at 

the top of the screen in red.

– One can click on the error message to go to the applicable field.

• (Additional validation is performed when the file is received by Verify) 

21
General Dataset Information, cont’d

• If there are no errors found in the initial validation, a review screen will 

appear with all of the data.

• The form should be reviewed and once found acceptable the Submit 

button should be selected.

22
General Dataset Information, cont’d

• After “Submit” is selected, the user is prompted to either open or save 

the XML file that was just submitted to Verify. It is strongly

recommended that a user saves the file locally. 

• Note: The automatically generated file name may not be meaningful to 

the user. It may be changed to something more meaningful before 

saving.

23
General Dataset Information, cont’d

• Standards Decision Tables

– The system will automatically determine which 

standards to apply to a submission based on the 

values in certain fields.

– The logic the system uses is captured in the 

Standards Decision Table

– The Standards Decision Table is located at: 

http://www.epa.gov/otaq/verify/publications.htm#loco-data

– If the submission does not match any of the entries in 

the table it will be rejected

24
Existing Locomotive datasets

• Manufacturers who wish to use datasets from existing 

locomotive dataset (e.g. for carryover engine family 

applications) in Verify must extract new xml file from the 

CDX. 

• Those xml files saved on to your personal hard drive prior 

to the Verify 11.00 deployment will not be functional in 

Verify 11.00 certification.

• Submitting a Request Dataset Report is the process of 

extracting a xml file from the CDX.

• The following is a step by step instruction on how to 

submit and receive a locomotive dataset report. 

25
Extract Locomotive datasets

• MyCDX → Locomotive → Locomotive/Engine Certification 

Information → Request Dataset Report

26
Existing Locomotive datasets 

• MyCDX → CDX Inbox → Click Verify Administrator 

message with subject “LOC Cert Data Submission received”

→ Click “here” to view the status history → Right click 

“RequestDatasetReport.xml”

27
Existing Locomotive datasets

• MyCDX → Locomotive → Locomotive/Engine Certification 

Information → Open Existing Dataset → Upload Dataset File

• The respective fields will populate the Verify forms, leaving 

the new fields introduced from the Verify 11.00 deployment 

unpopulated.

• If you attempt to hit review and submit, error message.

28
Uploading Locomotive Compliance 

Documents

•MyCDX → Locomotive → Upload Compliance Documents, or

•MyCDX → VERIFY: Upload Compliance Documents

29
Upload Locomotive Documents

• Only one format of each document is needed (for example, only the active spreadsheet or a PDF of the 

spreadsheet should be submitted, not both)

• Documents are associated with Applications by the Engine Family Name. Be sure to enter all of the Engine 

Family Names to which the document should be associated.

• Nearly all applicable Certification Document Types are listed in the pull-down. If the Document Type is not 

included in the pull-down then go to the Upload Compliance Documents page to upload.

• Add multiple documents in one submission (e.g. DF document, 30
Upload Compliance Documents

•MyCDX → Upload Locomotive 

Compliance Documents

•Only one format of each 

document is needed (for 

example, only the active 

spreadsheet or a PDF of the 

spreadsheet should be 

submitted, not both)

•Nearly all applicable 

Compliance Document Types are 

listed in the pull-down so “Other” 

should almost never be selected

•The Title field should be as 

specific as possible (for example, 

include the engine family name 

and type of document)

•Select applicable key words for 

each document

•Documents are associated with 

Applications by the Engine 

Family Name. Be sure to enter 

all of the Engine Family Names 

to which the document should be 

associated.

31
My CDX Inbox

• Notifications

– All notification messages in the inbox should be opened and reviewed. 

The subject line that shows in the inbox does not indicate whether the 

file has been accepted. The user should open the message to 

determine whether the file has been accepted.

32
My CDX Inbox

• After an Engine Family Dataset file is submitted and 

accepted, the following files are returned to the submitter 

(through the ‘status history’ link):

1. XML File containing the input (XML format)

2. Submission Processing Report (XML format)

3. Certificate Summary Information Report (CSI) (PDF format)

1 

3 

2 

33
My CDX Inbox

• Submission Processing Report

– All of the data that were entered in a given dataset. 

– Any system calculation results

– All business rules violated if a dataset is rejected, shown at the bottom 

of the processing report . See below.

34
My CDX Inbox

• Processing Notifications

– Notification messages will be sent to the MyCDX Inbox as an engine 

family moves through the certification process.

– E-mail messages are also sent to those identified in the manufacturer 

information. They will be notified when:

• The certificate is signed. 

35
Request For Certificate Process

After an Engine Family dataset has been submitted to and accepted by Verify, the Request For 

Certificate dataset for that Engine Family may be submitted. 

EPA Compliance Reviewer Approves the Manufacturer Request For Certificate or contacts the 

manufacturer with questions.

EPA Issues Certificate for Requested Engine Family

Submit Revised Engine Family Dataset with 

Corrections, Running Changes, FEL Changes

Yes Correction/Update Needed? No

End

Submit “Introduction to Commerce Date Update” or 

“Summary Sheet Data Update” or “New 

Certificate” Request for Certificate Dataset 

depending on revision types

36
Request For Certificate

• The Request for Certificate dataset is a 

separate submission from the Engine 

Family dataset.

• The request for certificate cannot be 

submitted until the engine family dataset 

has been submitted to and accepted by 

Verify.

37
Sample Certificate

38
Corrections

Dataset

• Before a certificate has been requested:

– Reload the dataset that was saved

• after submitting the original file, or

• from the status history link in the acceptance message in the CDX Inbox (Submission/Document Name: 

xml file), or

• from the status history link in the acceptance message in the CDX Inbox (Returned 

Documents/SubmissionProcessingReport.xml file) 

– Select the appropriate dataset Process Code

– Make the corrections in the form and Submit 

• After a certificate has been requested

– Select Certification Request | Delete Pending Request for Certificate or Summary 

Sheet Data Update

• Complete the form and submit to delete the Certificate Request 

– Reload the dataset and submit as above

– Request a new certificate

• After a certificate has been issued

– Reload the dataset and submit as above

– Select Locomotive/Engine Certificate Request 

– Select Request New Certificate

– Select the appropriated cert. request Process Code

• New Certificate - if the change requires that a new certificate be issued

• Summary Sheet Data Update – if the change updates information only

• Introduction Into Commerce Date Update

– Complete the rest of the Certificate Request and Submit 39
Corrections

Documents

• Before a certificate has been requested:

– Upload the revised compliance document

– Revise the application with a comment that the original document should be 

ignored. 

• After a certificate has been requested

– Upload the revised compliance document

– Select Certification Request | Delete Pending Request for Certificate or Summary 

Sheet Data Update

• Complete the form and submit to delete the Certificate Request 

– Revise the application with a comment that the original document should be 

ignored. 

– Request a new certificate

• After a certificate has been issued

– Upload the revised compliance document

– Revise the application with a comment that the original document should be 

ignored. 

– Select Certification Request | Request New Certificate 

– Select the appropriated cert. request Process Code

• New Certificate - if the change requires that a new certificate be issued

• Summary Sheet Data Update – if the change only updates information

• Introduction Into Commerce Date Update

– Complete the rest of the Certificate Request and Submit 40
Corrections

Delete a Document

• A document upload into the CDX cannot be deleted.

• Either resubmit the application dataset under a new engine family 

name and upload a corrected copy of the document, or

• Add a comment to the dataset noting that the improper associated 

document should not be used.

41
System Administration Information

• CDX Telephone - (888) 890-1995

• E-mail 

– verifyhelp@csc.com for technical questions regarding 

data or uploading your documents

– helpdesk@epacdx.net for help with your CDX 

registration (user ID/password) questions 

• Questions regarding the Locomotive regulations

– contact the assigned EPA staff Certification Reviewer, 

who can be found in the Manufacturer Information.

42