# 21258: Invalid SIP Manipulation Policy

Log Type: APPLICATION

Log Level: ERROR

## Description

There was a validation error for the Sip Manipulation Policy in question.

### Possible causes

Reference the docs for configuration information - https://www.twilio.com/docs/sip-trunking/sip-header-manipulation

### Possible solutions

Reference the docs for a possible configuation solition - https://www.twilio.com/docs/sip-trunking/sip-header-manipulation