The KDSR format of the KDS was introduced in HCR77A1. There is no support in HCR77A1 to enforce key material validity dates or archived records. If you plan to share your key data sets with HCR77A1 and plan to use the validity dates and archive records, understand that when your application executes on systems with HCR77A1, the inactive and archived records are used as if they were not archived or have valid validity dates.