CBR7031I   CBRXVOL {CREATE | RETRIEVE | UPDATE | REPLACE | DELETE | OPENVOL | GETVOL | CLOSEVOL} error for volume volser. Return code = return-code.

CBRXVOL return codes are documented in z/OS DFSMSdfp Diagnosis. For a CBRXVOL return code error of 20, check for any preceding IECxxx messages for an explanation of the Tape Configuration Database (TCDB) catalog failure. The volume record in the TCDB may be inaccurate if the function is update, replace or delete, or if a retrieve was done prior to an update, replace or delete. If the function was create, the volume record was not successfully created in the TCDB. Search problem reporting databases for a fix for the problem. If no fix exists, contact the IBM® Support Center.