Error 21258
Product: Elastic SIP Trunking
ERROR - 21258
Invalid SIP Manipulation Policy
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