Why am I getting "The client credentials you have entered are incorrect. Please check and try again."?

If you are seeing the message "The client credentials you have entered are incorrect. Please check and try again" when calling the direct bank authentication endpoint in Sandbox, it's possible we might have to manually enable your user.

1. client_id & client_secret are correct (beware of the environment you are on, as Sandbox is different than Production)

2. The redirect_uri in Postman is matching the one in Console

3. The Postman collection matches the environment in Console

4. Expected auth uri for POST request: https://auth.truelayer-sandbox.com/v1/authuri
   Example:

   {
   
   "response_type":"code",
   
   "client_id":"name-71dbd7",
   
   "redirect_uri":"https://console.truelayer.com/redirect-page",
   
   "scope":"accounts balance info transactions offline_access",
   
   "state":"this-is-a-state",
   
   "consent_id":"this-is-a-consent-id",
   
   "provider_id":"ob-aib"
   
   } 

Solution 

What to do next?