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If a record is no longer available then it is said to be deleted. Repositories must declare one of three levels of support for deleted records:
- no - the repository does not maintain information about deletions. A repository that indicates this level of support must not reveal a deleted status in any response.
- persistent - the repository maintains information about deletions with no time limit. A repository that indicates this level of support must persistently keep track of the full history of deletions and consistently reveal the status of a deleted record over time.
- transient - the repository does not guarantee that a list of deletions is maintained persistently or consistently. A repository that indicates this level of support may reveal a deleted status for records.
When instance record is deleted from Inventory or SRS, it should be processed in OAI-PMH as per official documentation .
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