So I see that this question has been asked multiple times. However none of them seem to be either answered or answered in a way that is helpful.
I've created a brand new developer sandbox account, as well as a merchant and app.
I've followed the instructions here https://docs.clover.com/docs/configuring-oauth-20#oauth-in-sandbox-vs-production to do a handshake with Clover to get an API token.
Step 2 works and I get an authorization code. I use that in step 3 to request an API token.
I use the APP ID and APP SECRET found on my app settings page (screenshot), and the authorization code from step 2, to request an API token.
My API token request url is as follows:
https://sandbox.dev.clover.com/oauth/token?client_id=XXXXXXXXXXXXX&client_secret=ALONGCODE&code=ANOTHERLONGCODE
the response is
{"message":"Unknown Client ID"}
What am I missing?
