I have written a set of API's in Asp.Net Core that surfaces the endpoints via swagger v2 (Open API). These endpoints require two api keys to authenticate. The first, retrieves the structure of the response. The second retrieves the data. In powerapps, I can create the custom connector via Import from Open API file (due to the swagger.json being locked down by authentication). And testing it in the test area works fine. When I add the connection to a powerapp, I get prompted for the first api key (powerapps doesn't seem to support multi auth). Once I enter the api key, an error is thrown of "Resource not found". As an example of a .Net Core route (not true to implementation due to privacy) please see the following:
///The format the response should be served as, e.g. xml, json.
///The static key required to access the structure.
///The dynamic key required to get data out.
We decided to test the same connectors in Power Automate (Flow) and this works correctly.
Any suggestions for what I may be missing would be appreciated.