Question: In the Sd Application for Policy and Charging Control (PCC), what is required to be included in the Auth-Application-Id AVP for reused Diameter commands from other applications, such as the Diameter Credit Control Application?
Option 1: The Sd application identifier
Option 2: The Diameter Base Protocol version number
Option 3: The TDF-Session-Request/Answer command code
Option 4: The PCRF's IP address
Explanation: Including the Sd application identifier in the Auth-Application-Id AVP for reused commands is necessary to properly identify and contextually apply the Sd-specific logic, especially when integrating with other Diameter applications like the Diameter Credit Control Application. This ensures seamless communication and correct application of policies within the PCC framework, supporting both PULL and PUSH procedures effectively.