FABJ3921E INVALID IMS RELEASE LEVEL LIBRARY IS USED
Explanation
The executed version of IMS is not supported by IMS HP Image Copy.
System action
Program FABJDMP0 or FABJRDB0 issues a user error abend code of U3921.
User response
Check the IMS SDFSRESL level of your executing environment. Correct the JCL and rerun the job.