In developer account i create an app so when i send request with app Client Secret then show error if I do create test app and inside test app create private app then send request with Access tokenthen API response contacts list
@EEnzipe, to make sure I understand correctly, you've created a test HubSpot portal, and within that test portal, created a Private App, correct? You're then receiving authentication requests while making API calls to that portal, attempting to use the credentials generated by the private app.
If so, it likely has to do with how you structure the API call and provide the authentication. Before the introduction of Private Apps, you would use the portal's API key as the authentication in the header, like:
@EEnzipe, to make sure I understand correctly, you've created a test HubSpot portal, and within that test portal, created a Private App, correct? You're then receiving authentication requests while making API calls to that portal, attempting to use the credentials generated by the private app.
If so, it likely has to do with how you structure the API call and provide the authentication. Before the introduction of Private Apps, you would use the portal's API key as the authentication in the header, like: