Question: In a 5G network, what triggers an increment in the subcounter for failed background data transfer policy creations at the Policy Control Function (PCF)?
Option 1: Transmission of an Npcf_BDTPolicyControl_Create response by the PCF to a Network Exposure Function (NEF) indicating a successful background data transfer policy creation.
Option 2: Receipt of a UE: User Equipment request for a new data session at the Access and Mobility Management Function (AMF).
Option 3: Periodic timer expiration for policy reviews at the PCF, regardless of policy creation outcomes.
Option 4: Transmission of an Npcf_BDTPolicyControl_Create response by the PCF to an NEF indicating a failed background data transfer policy creation.
Explanation: The correct answer aligns with the context, where transmitting an Npcf_BDTPolicyControl_Create response indicating a failed background data transfer policy creation increments the relevant subcounter per failure cause by 1, reflecting how failures are measured and counted within the 5G network's management and orchestration framework at the PCF.