I'm currently making a POST to https://api.appstoreconnect.apple.com/v1/betaTesters with all the correct credentials and getting a code 405 METHOD_NOT_ALLOWED.
As far as I know, I am in fact making a POST request as noted in the documentation: https://developer.apple.com/documentation/appstoreconnectapi/create_a_beta_tester#see-also
Any one else seeing this, please help.
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
Tags:
App Store Connect
Beta
App Store Connect API
TestFlight