Question: Upon deleting an existing AM (Access and Mobility) influence subscription, how does the Network Exposure Function (NEF) respond to the Application Function (AF) after successfully interacting with the Unified Data Repository (UDR)?
Option 1: The NEF responds with an HTTP "204 No Content" response message.
Option 2: The NEF responds with an HTTP "200 OK" response message containing the deleted subscription details.
Option 3: The NEF initiates a new HTTP request to the AF for confirmation before responding.
Option 4: The NEF only updates its internal records without sending a response back to the AF.
Explanation: When the NEF successfully deletes the policy data from the UDR, it indicates the completion of the deletion process. Responding with an HTTP "204 No Content" status code is standard practice in RESTful APIs to signify successful deletion of a resource without returning any content in the response body, which aligns with the described interaction between the NEF and AF for this specific use case.