Attempting to back up a dynam pool as shown below. Indicates a duplicate file, however searching all VTOCs in the system there is no duplicate file, only one which matches the Dynam catalog entry.
// TLBL DUMP,'BKUP.LARG04',,,,,,01 SYS005 // EXEC DYNUTIL,SIZE=300K 1S54I PHASE DYNUTIL IS TO BE FETCHED FROM VENDOR.DYNAM71 CA D Y N A M / D D I S K M A I N T E N A N CA DYNAM 7.1 0809YD000
DUMP '*' POOL=LARG04 CADD546E DUPLICATE COPIES OF FILE-ID HAVE BEEN FOUND 'MCC384L BACKUP G#16' CADD562E FUNCTION ABNORMALLY TERMINATED, RETURN-CODE 008 CADD563I END OF DYNUTIL PROCESSING. MAX.RETURN CODE=0008 1S55I LAST RETURN CODE WAS 0008