18.104.22.168.2 - The repository shall assign and maintain persistent identifiers of the AIP and its components so as to be unique within the context of the repository.
All of the AIPs retain their persistent identifiers for their entire life cycle in order to ensure that every AIP is unique in the repository. Please see the URI & File Naming Plan for details. The only alteration made to an identifier is in the case of article replacement. Please see 22.214.171.124 for more information.
Digital Preservation Policy Librarian