Max. num of custom fields?

This question is in reference to Atlassian Documentation: Adding a custom field

Is there a maximum number of custom fields that can be created?

1 answer

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Mathematically speaking, it's not infinite, as JIRA would eventually start trying to use numbers that the database and language can't really handle, but you'll never get anywhere near there before other things fail - humans not being able to read the list of fields because it would take them months, server/browser not able to render pages because they're simply too long, and so-on.

So, although there's no hard maximum, good practice dictates that you don't want to let your system get too complex because it'll be unmanageable and unhelpful when you've got "too many".

A lot of my history with JIRA has been "tidy up the mess made by previous admins" and one of the themes there is "too many custom fields".  The worst one took nearly 1,000 fields down to around 200 and the team had a goal of 100 by the time I left (technically, no problem, but the difficulty was getting the users to accept that their fields weren't actually of any use, or really could be merged with others with similar names)

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