The repository shall be able to identify which definition applies to which AIP.

This is necessary to ensure that the appropriate definition is used when parsing/interpreting an AIP.

Documentation clearly linking each AIP, or class of AIPs, to its definition.

The repository may use any method for associating the definitions and the AIPs that provides for the continued and continuous linkage of the two entities.

See the written definition of an APTrust AIP in our documentation for Definition of an AIP and section 4.2.1 Associated definition for each AIP or class of AIPs. This is the only definition of an AIP.