# phone_number_in_use

**HTTP status:** 409 (Conflict)

**Title:** Phone number in use

## Cause

This number is already connected.

## How to fix it

Read `detail` in the response: it says what to change. Do not retry the same request unchanged.

Every error carries `requestId` and the `Request-Id` header. Send it when you write to support.

[All error codes](/errors)