I have given my private "app" in Hubspot proper permissions, and I'm following the guideline set in the API documentation for required parameters in the initial authorization request that returns the auto code, which I then exchange for access token. I am trying to use Postman as my app to authorize, because it has a built-in callback URL for such requests.
I'm concerned that Postman is using the parameter key as "callback_url" or "redirect_url" instead of what Hubspot requires, which is "redirect_uri", but maybe not, since "redirect_uri" is oAuth standard.
Next, I've tried using "https://localhost:8080" as my callback, and I get this error in dev tools:
onOAuth2TokenRequestCallback @ requester.js:475650.
I've tried to leave callback parameter blank (to see if Postman then includes their own), and I get this error: An invalid redirect_uri was provided. Please contact the integrator.
I can't seem to find any good tutorials online for how to create a callback url for an oAuth request. I know I can create it myself on my website using PHP code, for example, but I don't know how. I'm not that gifted of a developer.
What can I do? Thanks a lot!