DFS0496A PARTITION SELECTION FOR DATA BASE DATASET FAILED
Explanation
HDUNLOAD encountered an error from IMS Partition Selection while preparing to unload the database segments for a partition or range of partitions belonging to the database specified on the job parameter card.
System action
Processing halts with return code 16.
User response
Verify that the database input on the job parameter card is correct. If you specified a range of partitions in the SYSIN using NUMBER= (for example, PARTITION=PART2,NUMBER=5) then you might need to correct the range value or correct RECON by defining additional partitions. Consult your partition selection exit routine to identify partition names within the scope of the range.
If partitions are missing, define them using the Partition Definition utility TSO panels and resubmit the job.