Make Required Field Resolution For Free

Solution Go to the project settings > Workflow; Edit the desired workflow; Find the transition that will reopen the issue and click on it; Navigate to the pop-up and click on Post Functions, then click Add post Function; Add the Clear Field Value event as a post function; Select the Resolution field and click add;

Resolution Set Using a POST Function Locate your Workflow: > Issues > Workflows. Click Edit under Actions for your workflow. Select your "Done" transition, and Click POST Functions. Click 'Add POST Function > Select 'Update Issue Field' Select Resolution for Issue Field and the appropriate Field Value.

Resolution is a system Field and it's always mandatory. You cannot make it optional from Configuration scheme. You need to remove it from create/edit screen and try creating a task. Try removing it and create a new task.

This work around worked for me. Remove the Resolution field from all views but the Closed screen. Remove the default value for the Resolution field. Set a Validator up so that the Resolution field must be changed when transitioning to Closed.

As the Resolution Field is a Required Field, if it is added to a "Default" Screen, newly created or edited issues will be in a Resolved state as the field would be populated by the Default Resolution Value.

Click on the gear icon then Setup > Object Manager. Choose the object > Fields & Relationships. Select the custom field that you will make required. Click on Edit and under General Options select Required. Click on Save.

Resolution is a special field in JIRA. It has an initial value of 'Unresolved', which means the field is NULL in the database. It is ALWAYS required when it appears on the screen. ONLY display it on the screen during a transition to the status where you want it set.