How to assign a phone number to resource account

Question

Hello

Please i need your help on this issue.

How to assign a phone number to resource account.

Receiving an error message when trying to add phone number to a recourse account.

The list of licenses

Microsoft Teams Phone Resource Account assigned to the Resource Account

A service phone number

Answer 1

@James James

This error typically occurs because a resource account (for example, one used for auto attendants or call queues in Teams) doesn’t have the required licenses assigned. When you try to assign a calling plan phone number to a resource account, Teams checks whether the account has a valid Microsoft Teams Phone System license—and if you’re using a calling plan number, the corresponding calling plan license as well.

Here’s what you can do:

1. Verify Licensing Requirements:

 • A resource account used for telephony must have a Teams Phone System license.

 • If you’re assigning a calling plan phone number, the resource account also needs an active calling plan license.

 • Note that sometimes calling plan phone numbers cannot be assigned to accounts that lack one of these licenses.

2. Assign the Appropriate License:

 • Sign in to the Microsoft 365 admin center.

 • Go to Users > Active users (or if you’re working with resource accounts, locate the specific resource account).

 • Click on the resource account and then on Licenses.

 • Make sure to assign not only the Phone System license but also the Calling Plan license if you intend to assign a calling plan number.

 • Save and allow a few moments for the licensing changes to propagate.

3. Reattempt the Phone Number Assignment:

 • Once the resource account has the appropriate licenses, try assigning the phone number again via Teams Admin Center or using PowerShell (if that’s your preferred method).

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