# bad_code_format

> Admin: the promo code name is not valid.

Source: https://tickwire.io/docs/errors/bad_code_format/

HTTP 400.

**Likely cause:** The name is empty, longer than 64 characters, or has characters other than letters, digits, - and _.

**What to do:** Use 1 to 64 letters, digits, - or _.

**Retry:** No. The same request gets the same answer; change something first.

Listed under [Billing, slots and dedicated IPs](https://tickwire.io/docs/errors/#billing-slots-and-dedicated-ips) in [Errors](https://tickwire.io/docs/errors/). Send the error's `requestId` to support and we can find the request.