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- the object can first be imported with an expiration date or
- an expiration date can be added to a previously existing object using a metadata update.
Some conditions to the values of these retention properties are if an object has an expiration date, its value must come before the creation date. Also, if the expiration date is null, the start of retention and the destruction date must be null as well. Lastly, if a destruction date is set, it must either equal to or surpass the expiration date.
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