# 21710: Phone Number Already Exists in Messaging Service

Log Type: APPLICATION

Log Level: WARNING

## Description

The phone number, short code or alpha sender ID already exists in the Messaging Service.

### Possible causes

* Multiple requests were made to add the phone number, short code or alpha sender ID to the Messaging Service's Sender Pool.
* The phone number, short code or alpha sender ID was already added at an earlier time.

### Possible solutions

* If you know this phone number is properly associated with the Messaging Service, do nothing.
* Remove the existing phone number, short code or alpha sender ID from the Messaging Service and add it back to the Messaging Service's Sender Pool.