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Article ID: 133528, created on Dec 18, 2018, last review on Jan 11, 2019


Office 365 users synchronization fails with the following output:

- (Unable to process the ambiguous license assignment.)

The following string can be found in the Office 365 sitelog:

WARN sync: User with azure Ad-ObjectID '8facca47-xxxx-xxxx-xxxx-bc8600539bbd' (user id is 'edxxxx40-xxxx-xxxx-xxxx-cd0df075223a') has an ambiguous license assignment: unable to bind Provisioning IDs 'MCOPSTN2' to any customer subscriptions.


Microsoft does not differentiate subscriptions for the same offer but the Office 365 application does. This behavior will be improved in scope of request #APSA-19010.


To avoid the issue, it is required to find Common Area Phone license in the Office 365 instance settings and mark it as can be assigned to users. After that go to Add-on tab and add Common Area Phone license as parent for Domestic Calling add-on.

Contact your Technical Account Manager or Pooled Technical Associates to trace the status of the #APSA-19010.

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