How To Fix T5175 - Number group cannot be deleted because it is being used!

SAP Error Message - Details

• Message type: E = Error

• Message class: T5 - SAPphone: Messages for telephony

• Message number: 175

• Message text: Number group cannot be deleted because it is being used!

What causes this issue?

One or more users use this number group.

System Response

This number group cannot be deleted.

How to fix this error?

If you still want to delete this number group, you must firstly delete
it from all user settings.
You can obtain an overview of the number groups used in your system,
for example, by choosing Goto -> User settings -> User list in the
SAPphone system administration.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.