Merges entries from one volume catalog to another. REPRO retrieves tape library or tape volume entries and redefines them in a target volume catalog. You cannot use the LEVEL parameter when merging volume catalogs.

If the character prior to the last character in both VOLCATs is 'V', both VOLCATs are specific. You cannot use MERGECAT of two specifics as this would mix VOLSER names.

For a target VOLCAT that is SPECIFIC (not VGENERAL), you must specify the VOLUMEENTRIES parameter. You do not want all entries merged into a specific catalog.

If the case is VGENERAL to SPECIFIC, the specified entry characters must match the first two third qualifier characters of the target catalog.

You may not use the REPRO command to copy the catalogs of two VGENERALs, when MERGECAT is specified.