code: def registration_request_verify(registration_request):
      
      try:
          registration_request.verify()
      except MessageException as e:
          raise InvalidClientRegistrationRequest(str(e), registration_request, oauth_error='invalid_request') from e
docs: Verifies that all required parameters and correct values are included in the client registration request.
      :param registration_request: the authentication request to verify
      :raise InvalidClientRegistrationRequest: if the registration is incorrect