SUPPRESS_DYNALLOC_MSGS will suppress the warning message 53. What causes S80A Abends?
An Abend S80A is usually caused by insufficient 24-bit (“below the 16-megabyte line”) storage in the Region for the job. System I/O functions such as QSAM use this storage area for buffering. If too many buffers are requested (e.g. DCB=BUFNO=nnnn) for a file, and the REGION parameter for the Job Step is too small, then system services may fail. Some adjustments that can be made in an attempt to alleviate the problem are: Try increasing the REGION for the JOB STEP.