"Assigned to" field to be read only on reassignment to another group

[Naveen10]

I want to make the "Assigned to" read-only for assignments only. After the tickets have been assigned (And saved), users should be able to assign them to a group member. after reassignment to another group the Assigned to" field should be read-only. I have written the UI policy but it's not working when I assign an assignment group after assigning it to the person it shows read-only but I want to read only when I re-assign it to another group. please advise

[Amit Pandey]

Hi @Naveen10 

While I can help you with the solution, frankly speaking, you should not take up such useless requirements. I entirely agree with @Mark Manders Assigning to another group, but keeping it assigned to the same person just sounds like a waste of time.

You had better to take the business justification internally from your management.

Regards,

Amit