# 21660: Mismatch between the 'From' number and the account

Log Type: APPLICATION

Log Level: ERROR

## Description

The `From` number you are using to send an SMS is not associated with your account.

### Possible causes

The number you are using does not belong to the account whose credentials are present in the API request.

### Possible solutions

Check that you are using account credentials that correspond with the account that owns the phone number.