I found the below details in JESMSGLG and can any one provide your inputs to identify the issue. Correspnding program is assembler and I don't have any idea on this program. This is an existing module and did not undergo any change in the recent past.
SYSTEM COMPLETION CODE=0C1 REASON CODE=00000001
TIME=15.00.53 SEQ=39177 CPU=0000 ASID=00B2
PSW AT TIME OF ERROR 478D2000 000FABBE ILC 6 INTC 01
ACTIVE LOAD MODULE ADDRESS=000079B0 OFFSET=000