When dealing with COBOL abends or issues, please be sure that you are at the top level on the IBM side.
After upgrading your COBOL software or Datacom software be sure to have the latest APARs related to COBOL.
This document contains a complete listing of releases, refreshes and fix packs (also known as PTFs) sorted by version for IBM Enterprise COBOL 5.x/6.1 for z/OS. We recommend installing the latest PTFs as they are cumulative (ie they contain all the APAR fixes made available for the product since it first shipped).
2. On the Datacom side you may check:
If CA Datacom/DB 14.0, APAR #: RO79646, APAR #: RO71415
If CA Datacom/DB 15.0, APAR #: RO83077