# E14000 — NumberUnavailable

Number is not available for allocation.

- **HTTP status**: `409`
- **Type**: `conflict_error`
- **Name**: `NumberUnavailable`

## What to do

The number was taken or withdrawn while you were choosing it. List the available numbers again and order a different one.

## Related

- [Idempotency](/docs/api/idempotency): safe retries and key reuse rules
- [E14xxx — Numbers](/docs/api/errors/E14xxx): every code in this range
- [Errors](/docs/api/errors): the full wire contract, status mapping, and error catalog
- [Error handling](/docs/guides/errors): branching on `type` and `code`, validation details, and `vendor_code`