If set to 'yes', the last submitted open issue will be closed if the Jenkins build succeeds. No user intervention will be required.

If set to 'no', the last submitted open issue will be updated with a success message, but left open. A user in the project will have to manually close the issue.

NOTE: If your tracker has any workflow (status transition) rules, Jenkins will not be able to close your issue automatically if there is a conflict with a workflow rule.