CQM166E RETURN CODE `return_code` REASON CODE `reason_code` WAS ENCOUNTERED DURING DYNAMIC DE-ALLOCATION OF `data_set`.

Explanation

Dynamic de-allocation of the data set shown in the message failed. Reason and return codes provided in the message enable further diagnosis.

User response

For more information, see z/OS DFSMS Macro Instructions for Data Sets (z/OS 3.1 documentation).