Hello and thank you for any assistance.

Management of the Mitel system was handed to our dept without any training. We have gotten by but run in to issues occasionally. I only mention it so you know I'm still an amateur with this system.

We have Micrsoft AD integration and when a user leaves the company, we remove the info from their AD account and synch with the Mitel servers. Occasionally we get an error, like they are still hotdesked into a phone, that we can resolve to remove the user. We currently have 5 Mitel users that give the same error after the AD sync:

Failed to delete phone MiVoice Business Phone Service with number XXXX on Location: Line keys must be cleared before the device can be deleted.

I connected to the MiVoice Business server, lookeed up the user under Users and Service form and tried to clear all keys from their device. which gives me the error:

At least one key failed configuration:
Key 2:
References exist in the Call Rerouting First Alternative form.



Now I'm stuck. I'm guessing that were I tried to clear the keys is not the correct place to fix the original issue. Does anyone know how to fix the Line Keys must be cleared error? I attached an example of the error.

Thank you

• https://files.engineering.com/getfile.aspx?folder=848d1bfc-f287-47a2-b776-b