Hi,
A HTTP 403 error typically means that the server understood the request, but it refuses to authorize it. This could be due to a few different reasons:
Authentication and Authorization: Make sure you are correctly authenticated and you have the right level of access to request data from the /reports endpoint. Verify your access token and its associated permissions.
API Scope: Check if the access token is scoped correctly for the CJA APIs. Your access token should have the correct scope for accessing the /reports endpoint.
Request Structure: Make sure you're constructing your request correctly. It seems like you might be trying to pass the function get_headers and parameters directly to the headers and params arguments. If these are functions that return your headers and parameters, you should call them with parentheses like headers=get_headers and params=parameters().
Endpoint Availability: The specific endpoint you are trying to reach may not be available for your organization or it may require special permissions.
Rate Limiting: Make sure you are not exceeding any rate limits imposed by Adobe on API calls. If you make too many requests in a short period of time, you might be temporarily blocked from making additional requests.
So, few areas to debug but hope this solves your problem.
Thanks
Madhan