Question: In the context of updating an MBS Group Message Delivery in a 5G system, what is the expected outcome if the Network Exposure Function (NEF) successfully modifies the associated MBS User Service and receives confirmation from the Multimedia Broadcast Services Function (MBSF)?
Option 1: The NEF sends an HTTP "200 OK" status code with the updated "Individual MBS Group Message Delivery" resource to the Application Function (AF), using the MbsGroupMsgDel data structure.
Option 2: The NEF interacts further with the AF to request additional authorization for the update, as per related architectural enhancements for this scenario.
Option 3: The NEF responds with an HTTP "204 No Content" status code to the AF and then updates its internal records without notifying the AF of the success.
Option 4: The NEF relays a ProblemDetails data structure indicating an application error to the AF, despite successful modification at the MBSF.
Explanation: Upon successful modification of the associated MBS User Service and reception of confirmation from the MBSF, the NEF is expected to notify the Application Function (AF) of the update's success. This is achieved by sending an HTTP "200 OK" status code, which signifies a successful request handling, along with the updated resource representation in the MbsGroupMsgDel data structure. This approach aligns with standard RESTful API practices for updating resources and ensuring clients are informed of changes.