Make.com & Salesmsg integration

:bullseye: What is your goal?

I want to have my AI Agent send sms via salesmsg. Webhook → salesmsg module → webhook response

:thinking: What is the problem?

Dec. 15 my scenario is running perfectly, then by Dec. 16 i encountered an error saying: Error
Failed to verify connection ‘My Salesmsg connection’. Error code: 401 Error

  • Failed to verify connection ‘My Salesmsg connection’. Error code: 401 Error

:test_tube: What have you tried so far?

I’ve tried re-authenticate the connections, have deleted the authorize apps in my salesmsg account, have tried creating a new salesmsg module. none of that works.

Today I was trying to re-authenticate the connections, but here’s an error code:

{“message”:“The request failed due to failure of a previous request.”,“code”:“SC424”,“suberrors”:[{“message”:“Error code: 401 Error”,“name”:“RuntimeError”}],“debug”:[[“request”,“POST”,“https://api.salesmessage.com/pub/v2.1/oauth/token",{“body”:{“code”:“***”,“client_id”:“***”,“grant_type”:“authorization_code”,“redirect_uri”:“https://www.integromat.com/oauth/cb/salesmsg”,“client_secret”:“***”},“headers”:{“user-agent”:“Make/production”,“content-type”:“application/x-www-form-urlencoded”},“timeout”:40000,“type”:“urlencoded”}],[“response”,401,{“body”:{“message”:“Unauthorized”,“auth_required”:false},“headers”:{“date”:"Mon, 15 Dec 2025 23:00:43 GMT”,“content-type”:“application/json”,“content-length”:“48”,“connection”:“close”,“x-amzn-requestid”:“a0033b49-770a-42a9-a1eb-cdde857ed53a”,“access-control-allow-origin”:“*”,“access-control-allow-headers”:“Content-Type,Authorization,X-Amz-Date,X-Api-Key,X-Amz-Security-Token,TimeZone,SM-User-Metadata,External-Referer,Salesmsg-App,X-Csrf-token,Token”,“x-amzn-errortype”:“UnauthorizedException”,“x-amz-apigw-id”:“VpvsVG17PHcEZ9A=”,“access-control-allow-methods”:“DELETE,GET,HEAD,OPTIONS,PATCH,POST,PUT”,“access-control-allow-credentials”:“true”}}]]}

:camera_with_flash: Screenshots: scenario setup, module configuration, errors

I checked the salesmsg documentation and they’re no longer using the “https://api.salesmessage.com/pub/v2.1/oauth/token” which is what make.com is using. Chat support of salesmsg just said I need to “update to the current OAuth2 version of the API.”

Hi, that explains the issue.

Salesmsg has deprecated the v2.1/oauth/token endpoint, and Make is still using it. That’s why you’re getting the 401, even when trying to re-authenticate.

There’s nothing you can fix in the scenario itself. The Salesmsg app in Make needs to be updated to the current OAuth2 API.

I think the best next step is to contact Make support and let them know that Salesmsg confirmed the OAuth endpoint has changed. Once Make updates the integration, the connection should start working again.

Regards, Tony

3 Likes

Thanks so much for the reply! :grin: