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Swaroopa Akula 2Swaroopa Akula 2 

flow tried to update these records: null. This error occurred: FIELD_INTEGRITY_EXCEPTION: You can’t change the completion date on a milestone that’s already exited an entitlement process.: Completion Date

I am having process builder error for the auto milestone completion. 
entitlement exit criteria i kept based on case closed date

flow tried to update these records: null. This error occurred: FIELD_INTEGRITY_EXCEPTION: You can’t change the completion date on a milestone that’s already exited an entitlement process.: Completion Date
ANUTEJANUTEJ (Salesforce Developers) 
Hi Swaroopa,

I found the below link where in they had a similar issue can you please have a look at it in the below link
>> https://salesforce.stackexchange.com/questions/66761/update-completion-dates-of-casemilestone

In case if it helped can you please choose this as the best answer so that it can be used by others in the future.

Regards,
Anutej
Alexander Thurn 6Alexander Thurn 6
Thanks for the link, Anutej. Worked like a charm.
ANUTEJANUTEJ (Salesforce Developers) 
Glad to know that the link came of use could you please mark it as best answer so that it can be used by others in the future.
Alexander ThurnAlexander Thurn
Hi Anutej, i gave you a thumbs up as i do not have a button to mark your reply as best answer.