Validators

Validators are used to validate the input made on the transition screen after the transition is triggered. 

Jira Misc Workflow Extensions makes the following Validators available to Jira administrators:

• Build-your-own (scripted) Validator — A workflow validator that is based on the result of a Jira expression.  
• Comment Required Validator — A workflow validator that forces users to enter a comment during a transition. If the user does not enter a comment, a custom error message will be displayed.
• Field Required Validator — A workflow validator which ensures that the specified field has a value during a transition.
• Linked Issues Validator — A workflow validator which ensures that issues linked to the current issue (existing and ones added during the transition) have certain characteristics.
• Linked Issues Status Validator — A workflow validator which ensures that the current issue's linked issues (existing and ones added during the transition) are in one of the selected statuses.