In the CA DATACOM/DB VERSION 15.0 Z/OS README it listed
PTF Prod. Rel. Description
RO60055 DB 14.0 PROVIDE COMPATIBILITY WITH FUTURE RELEASE
RO67544 DD 14.0 VERSION 14.0 COMPATIBLITY WITH VERSION 15.0 **
RO68826 DD 14.0 DSF RETURN CODE BDM001 AFTER APPLYING RO67544 **
RO60006 SQL 14.0 -999 SQLCODE CANT FIND QCBSTMT AFTER FALLBACK TO 14.0
RO72222 SQL 14.0 15.0 CHECK CONSTRAINTS FAIL ON FALLBACK TO 14.0
RO83547 DD 14.0 FIX ERROR MSGS FROM DDSDCLM TO REFLECT KEY **
RATHER THAN FIELD
We had to apply the following prior to upgrade
RO67544 - VERSION 14.0 COMPATIBLITY WITH VERSION 15.0
RO68826 - DSF RETURN CODE BDM001 AFTER APPLYING RO67544
RO83447 - FIX ERROR MSGS FROM DDSDCLM TO REFLECT KEY RATHER THAN FIELD
RO86482 - RECOVERY CAN FAIL TO CORRECTLY PROCESS ROLBK EVENTS
RO87877 - RETURN CODE 13(16) AFTER EXTEND CBS HEURISTIC BASE
RO88913 - DQ025E ERROR USING JOIN PROCESSING DURING EXPORT
RO59932 - Dataquery Field Display Problems
RO85169 - Dataquery Join Processing Gets Error DQ02E
RO95273 - WRONG ROWS RETURNED ON MULTIPLE OUTER JOINS