The repository shall maintain the associations between its AIPs and their descriptive information over time.

This is necessary to ensure that all AIPs can continue to be located and retrieved

Log detailing ongoing maintenance or checking of the integrity of the data and its relationships to the associated descriptive information, especially following repair or modification of the AIP; legacy descriptive information; persistence of identifier or locator; documented relationship between AIP and its descriptive information; system documentation and technical architecture; process workflow documentation.

Repositories must implement procedures that let them know when the relationship between the data and the associated descriptive information is temporarily broken to ensure that it can be restored.

As discussed in 4.5.3 and in the technical documentation on Preservation and Storage, this is an ongoing process.

Also see the Definition of AIPs, the subsection Transforming SIPs into AIPs, and Monitoring for additional information.