Question: When an Application Function (AF) requests the creation of a Network Slice Parameters Provisioning via the Nnef_SliceParamProvision API, what is the expected response from the Network Exposure Function (NEF) upon successful processing and reception of a positive response from the Unified Data Management (UDM) entity?
Option 1: HTTP "201 Created" status code with an empty response body
Option 2: HTTP "200 OK" status code without any Location header field
Option 3: HTTP "204 No Content" status code upon initial creation
Option 4: HTTP "200 OK" status code including a Location header field containing the URI of the created resource, and the response body with a representation of the created "Individual Slice Parameters Provisioning" resource
Explanation: Upon successful creation of a Network Slice Parameters Provisioning, the NEF is expected to provide feedback that not only confirms the success (via the HTTP status code) but also offers additional useful information for the AF, such as the URI of the newly created resource and its representation. This aligns with RESTful API best practices for resource creation, ensuring the client can immediately access or reference the new resource without needing additional requests.