The PowerExchange Logger for z/OS uses the DFSMShsm ARCGIVER module to explicitly recall any archived log data sets that are identified as “migrated" but needed for data set allocation requests.

If ARCGIVER is not available, an allocation request for a migrated data will fail. The ARCHRCAL macro that attempts to invoke ARCGIVER issues an error code, such as 0x806, which is used as a DYNALLOC Info Code (S99INFO).