Question: Upon successful creation of an MBS User Data Ingest Session Status Subscription, what does the NEF return to the AF in its response message?
Option 1: HTTP "200 OK" status code with a "Content-Type" header field indicating the MBSUserDataIngStatSubsc data structure.
Option 2: HTTP "201 Created" status code without any specific header fields, but with an empty response body.
Option 3: HTTP "202 Accepted" status code with a "Location" header field pointing to a generic resource.
Option 4: HTTP "201 Created" status code including a "Location" header field with the URI of the created resource, and a response body containing the created "Individual MBS User Data Ingest Session Status Subscription" resource within the MBSUserDataIngStatSubsc data structure.
Explanation: The correct answer reflects the detailed response behavior specified for successful subscription creation. The "201 Created" status code is standard for indicating a new resource has been created, and including both the "Location" header with the URI of the new resource and the representation of the created resource in the response body provides the AF with all necessary information to manage the subscription. This aligns with best practices for RESTful API design, ensuring clarity and usability for clients interacting with the NEF.