The AMBLIST PDSE buffer space was exceeded because the region size was insufficient.
Processing terminates for this operation and continues with the next control statement. (The AMBLIST return code is 8.)
Verify that the specified AMBLIST REGION value is at least set to the value recommended in z/OS MVS Diagnosis: Tools and Service Aids. Increase the region size and rerun the job.
AMBLIST
HMBLKCTL, HMBLBLDM, HMBLBIDR, HMBLBXRF