I can create subscription but can not delete

[xiaomile]

When calling the methods of notification --"get_subscription" and "create_subscription",they work well.
But when calling the method--"delete_notification_subscription",it show me an error --:

sp_api.base.exceptions.SellingApiForbiddenException: [{'message': 'Access to requested resource is denied.', 'code': 'Unauthorized', 'details': ''}]

[xiaomile]

I find the solution
Refer to this discussion
Edit site-packages/sp_api/api/notifications/notifications.py
find this :

return self._request(
        fill_query_params(kwargs.pop('path'),
                          notification_type if isinstance(notification_type, str) else notification_type.value,
                          subscription_id),
        params={**kwargs})

in the method "delete_notification_subscription"

change it to:

return self._request_grantless_operation(
        fill_query_params(kwargs.pop('path'),
                          notification_type if isinstance(notification_type, str) else notification_type.value,
                          subscription_id),
        params={**kwargs})

This change worked in the Japan marketplace