Question: When a PCEF wants to remove all previously provided event triggers for an event report indication, what value should it provide within the Event-Trigger AVP to the PCRF?
Option 1: NO_EVENT_TRIGGERS
Option 2: DEFAULT_TRIGGER_SET
Option 3: CLEAR_ALL_EVENTS
Option 4: SUBSCRIBE_NEW_EVENTS
Explanation: According to the specified behavior for managing event triggers, when a PCEF needs to remove all previously provided event triggers, it must provide the Event-Trigger AVP set to the specific value 'NO_EVENT_TRIGGERS' within the Event-Report-Indication AVP to the PCRF. This action effectively clears all existing event triggers. The other options are not defined in this context for this specific action, making NO_EVENT_TRIGGERS the correct choice.