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For information on how to configure a validator in JIRA, see the JIRA documentation.

 Be careful what kind of regular expressions you are using. Some might be exploited by a malicious person. See ReDoS . It is your responsibility as JIRA administrator to only use safe regular expressions.

Example

A workflow is configured so that the 'Resolve' transition has the 'Regular Expression Check' validator where 'TextField' has to match '[a-z]*'. If a user attempts to resolve an issue on this workflow, where the 'TextField' is for example '7 pieces', the validation will fail, and the transition will not be completed. However 'pieces' as content would be allowed.

 Supported Field Types