TDP2800 THE DDNAME "name" IS NOT DEFINED
Explanation:
The value for a DDNAME operand on a SET USERCS command specified a ddname that does not exist.
Generated By:
TDP.
Remedy:
Either correct and re-issue the rejected command, or define the ddname and re-issue the command (under MVS or VOS3, it would be necessary to restart TDP to add the DDName to the TDP JCL).