Let's say I have an object such as a user account or some kind of certificate that is about to expire. What is the most idiomatic noun that describes the act to make it last longer and not expire?
I want to use it in an issue tracker in the ticket title, so my actual example "sentence" would be something like:
... of user account for service xyz
...where that user account is due to expire and its expiration date should be postponed. A complete sentence might be:
The ... of the user account was denied because the service has been superseded by [another].
The most suitable words I have found so far are "extension" and "prolongation". The examples from the Oxford Advanced Learner's Dictionary for both seem to fit (extend a contract, prolongation of human life). Although it sounds to me as if prolongation goes more with nouns that denote a time span, such as "life" and "holiday", rather than things that have an expiration date (I do not consider an account to denote a time span). On the other hand, "extension of a user account" sounds a bit strange to me (as a non-native speaker), as if I wanted additional privileges be granted to that account, or some other kind of upgrade.