We’ve just enforced SAML SSO for our Genesys Cloud org. Everything works fine for human users logging in via the portal, but our backend service that consumes webhook events is now failing to authenticate.
The service uses the client_credentials grant type to get an access token. It was working perfectly before the SAML switch. Now, hitting /oauth/token returns a 401.
Here’s the request payload:
{
"grant_type": "client_credentials",
"client_id": "my-app-client-id",
"client_secret": "my-app-secret"
}
And the response:
{
"error": "invalid_client",
"error_description": "Client authentication failed"
}
I’ve double-checked that the app still has the correct permissions in the developer portal. The SAML IdP is configured correctly for user login. I’m assuming programmatic access shouldn’t be affected by SAML, but clearly something changed in the auth handshake.
Did we miss a step in the app configuration? Or does the client_credentials flow need to be explicitly whitelisted somewhere now that SSO is on?
Checked the event delivery logs and the webhooks are timing out because the service can’t get a fresh token. The retry policy is set to exponential backoff, but it’s just hitting the wall repeatedly.