ARC1258 The target DBS does not support this older archive format (SysFormat %s).
The target DBS for this restore does not support a restore from the specified archive file because it was created from an earlier version of the DBS that is no longer supported. For example, a V2R5 DBS can not restore archives created from a machine running DBS version V2R2 or earlier.
The archive file must be restored to an intermediate DBS release that is still supported by the target DBS. Another archive must then be created from the intermediate system before it can be restored to the target DBS. For example, a V2R2 archive could be restored to a V2R4 system, re-archived from the V2R4 system and then restored to a V2R5 system.