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.
Before opening a ticket, please confirm the following:
client_secretare correct (beware of the environment you are on, as Sandbox is different than Production)
redirect_uriin Postman is matching the one in Console
The Postman collection matches the environment in Console
Expected auth uri for POST request: https://auth.truelayer-sandbox.com/v1/authuri
"scope":"accounts balance info transactions offline_access",
What to do next?
- Contact us through chat or open a ticket.
If you need more information
Please refer to our docs Direct Bank Authentication section here