Error 21654
Product: Programmable SMS
ERROR - 21654
ContentSid Required
A ContentSid must be specified if ContentVariables are provided in the request. A ContentSid must be specified if ContentVariables are provided in the request.
Possible Causes
You attempted to send a message with the ContentVariables parameter but without ContentSid
Possible Solutions
Please provide a ContentSid when the request includes the ContentVariables parameter