Unable to close change task

[Nithin21]

Am seeing wierd behaviour .. as ITIL user am trying to close change task ... state field is read only ... when I click on Close, I can see state is moving from open to close ... then it again moves back to Open ...

What is causing state to come back to open ?

note: instance is domain separated 

[Tim Provin]

Only thing I see in an OOTB instance is a business rule on the Change Task called "Prevent state update when Change on hold".  If your Change Request is on hold, it will not allow you to change the state of the Change Task.

[Abhinay Erra]

As Tim said. it might be a business rule. Turn on debug business rule details and see the debug logs on the form

[Nithin21 · Accepted solution]

Culprit Is an acl on state field .. it requires “task_editor” role