I am unable to activate the extension mobility option on IP phone,
it gives an error saying "Update failed. One of the required fields on the page has the same value as an entry that already exists in the database. Please check the corresponding Find List page to verify your entry does not exist."
I already tried deleting and adding the phone again to the call manager, but this error recures back, the call manager version is 18.104.22.1680-3
problem definition:- The root cause of the problem is the intermittent failure to delete the auto-generated device profiles (ADP) for a phone. If you delete phones that are configured for extension mobility with the logout profile set to use current, it leaves an ADP in the database. This results in the inability to reinsert this phone into the database.
the issue was resolved by performing the following tasks:-
1. Use CallManager Administration in order to find and delete the orphaned auto-generated device profile. In order to do this:
a. Choose Device > Device Settings > Device Profile.
b. Click Find > All.
c. Delete the ones that are not associated to any of the IP phones.
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