Testing, Going Live, and Handling Errors



The DTCC Equities Clearance and Settlement User Acceptance Testing (UAT) group supports user acceptance testing for applications provided by the DTCC Equities Clearance and Settlement Services.

Click here to fill out a pdf User Acceptance Testing request form (64 KB) .

To contact the DTCC Equities Clearance and Settlement UAT Group, please use the following email address: This email address is being protected from spambots. You need JavaScript enabled to view it.

We are available 9:00 a.m. to 5:00 p.m. eastern time.

Note: All test applications run on standard business time frames in our test environment.

For general information regarding ISO 15022 settlement messaging, please contact the DTCC Relationship Services Group (RSG) at (800) 422-0582 or via e-mail at This email address is being protected from spambots. You need JavaScript enabled to view it..

For production connectivity issues, please contact the DTCC Business and Technology Support (BATS) group at (888) 382-2721 or at This email address is being protected from spambots. You need JavaScript enabled to view it..

You will be receiving ICM error codes that are defined in the following files:

  • ICMERR
  • ICMFLD

If you are not currently receiving these files, please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. or at (888) 382 2721.