# 32115: X-Branded-CallReason header contains an invalid value.

Log Type: APPLICATION

Log Level: ERROR

## Description

Twilio returns this error when the `X-Branded-CallReason` SIP header includes a value that Twilio cannot accept. For this error, the documented cause is a call reason that exceeds the 50 character limit for the header value. Branded Calling call reasons must also accurately describe the reason for the call and follow Twilio's content restrictions.

### Possible causes

* The value in `X-Branded-CallReason` is longer than 50 characters.
* The call reason does not clearly describe why you are calling.
* The call reason includes content that Branded Calling does not allow, such as non-ASCII or control characters, hyperlinks, misleading content, emojis, non-Latin characters, or personal information.

### Possible solutions

* Shorten the `X-Branded-CallReason` value so it stays within 50 characters before you send the SIP request.
* Use plain language that accurately describes the purpose of the call.
* Remove unsupported content from the call reason, including links, emojis, special or non-ASCII characters, and any personal information.
* If you are using Branded Calling, review your configured call reason against the current Branded Calling restrictions, then resend the call with a corrected header value.

#### Additional resources

* [Elastic SIP Trunking](/docs/sip-trunking)
* [US Enhanced Branded Calling](/docs/voice/branded-calling/us-enhanced)
* [Branded Calls FAQ](https://help.twilio.com/articles/22312096414363-Branded-Calls-FAQ)