If you can see the directory number as “used in Unity” it should not appear as an “available” number to provision for onboarding in CUCM. When you do that you have a discrepancy between the two systems.
Add a check box in the DN pool “maintain number integrity between CUCM and Unity”, so this option can be turned on or off by pool
When “on” the directory number will not be available for onboarding provision.
Similar to the option we have now of checking “Include Inactive, Unassigned DNs”
Can the error message “already existed in Unity” should also include the “Alias”. So you know what voicemail box is the problem.
Or at the minimum be able to search the voicemail box by extension number in a dashboard search even if they are not in CUCM.
Have dashboard option to choice the voicemail partition and search only it.
Samuel Araujo
First Citizens ticket 51617