SAP C_FIORD_2502 Exam - Topic 4 Question 19 Discussion

ODataModel is the only model that:

Supports deep inserts, i.e., inserting parent and child entities in one request.

Utilizes navigation properties and the $expand functionality.

SAP Gateway Developer Guide:

''A deep insert involves a POST request with a nested payload... supported only by the OData model.''

XML/JSON/Resource models are static and client-only, without support for backend communication or nested entity posting.