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Only one of Days Before Expiration and Days After Expiration may be set in a given Expiration Policy.

In order to have an expiration policy apply on the exact day of expiration, set Days After Expiration to 0. (Do not use Days Before Expiration for this.)

Note that 0 and blank are treated differently. A blank Days value will be treated as unset, and not used for matching records.

Versions prior to Registry v1v2.10.0 may not have handled these settings as described here.