DFS9137I OTMA DRU EXIT RETURNED INVALID USER DATA PREFIX LENGTH
Explanation
An OTMA DRU user exit routine specified an user data prefix length greater than 1024 bytes. OTMA expects the user data prefix length to be within 1024 bytes. Since this length is exceeded, OTMA considers it invalid and generates the status code AX.Programmer response
Correct the DRU exit routine and ensure that the user data prefix length is not greater than 1024 bytes.