Question: Upon successful creation of a Media Streaming Event Exposure Subscription, what does the NEF return to the event consumer Application Function (AF) in its response message?
Option 1: An HTTP "200 OK" status code with an empty response body
Option 2: An HTTP "201 Created" status code, including a "Location" header field with the URI of the created resource and the response body containing the created subscription representation
Option 3: An HTTP "202 Accepted" status code without any additional information about the created resource
Option 4: An HTTP "404 Not Found" status code indicating the subscription was not created
Explanation: When a Media Streaming Event Exposure Subscription is successfully created, the Network Exposure Function (NEF) informs the event consumer Application Function (AF) about the outcome and provides details of the newly created resource. This is achieved by returning an HTTP "201 Created" status code, signifying a new resource has been created. The response includes a "Location" header field with the URI of the created resource and the subscription representation in the response body, enabling the AF to access and manage the new subscription, aligning with standard HTTP protocol practices for resource creation.