For VSAM data sets, DFSMSdss uses the expiration date from the source catalog entry to set the target’s expiration date in the catalog. The target expiration date in the VTOC is 99365. For an indexed VSAM data set, the expiration date in the VTOC for the index component is 99365.

For non-VSAM data sets, DFSMSdss uses the expiration date from the source VTOC to set the expiration date in the target VTOC. If the target is cataloged, the expiration date in the catalog is set to the date from the source VTOC if the source data set is SMS-managed. If the target is cataloged, and the source data set is not SMS-managed, the expiration date in the catalog is not set.