Solved.I needed to use OAuth 2 Custom token.Token endpoint needed my client_id in the link string. x-api-key could be put in the shared header of the OAuth Token endpoint (POST).Authorization Bearer not needed (this was confusing).  

I believe Im halfway there I was able to initializes the call for the Server to Server credentials (POST to https://ims-na1.adobelogin.com/ims/token/v3) and it returned the"access_token": "string of characters","token_type": "bearer", "expires_in": 86399 I'm still trying to figure out the 2nd part t...

Im creating an application with the Server to Server authentication which will be a 2 legged OAuthhttps://developer.adobe.com/developer-console/docs/guides/authentication/ServerToServerAuthentication/ The documentation uses a POST request to https://ims-na1.adobelogin.com/ims/token/v3 with credentia...