CASXB0038S Unexpected heap error, status=<heap-file-status>

An unexpected <heap-file-status> was returned from an internal heap I/O request.
System Action:
Loading of the input file is terminated.
Resolution:
Investigate and correct the cause of the <heap-file-status>. If this is an extremely large mapset, try setting COBSW=+P3 to increase heap capacity.
Module:
scrload
Destination:
stdout