DFS2590I INVALID CHECKPOINT ID FOUND IN ddname
Explanation
The checkpoint identification in the MSDB image copy control record was not the same as the identification from which the system was restarted. A possible cause is that a wrong checkpoint was entered or the DD statement points to the wrong data set.
System action
No MSDB image copy is loaded.
Programmer response
Restart IMS with the correct checkpoint identification or correct the JCL.