This object sets the number of accounting files awaiting external collection that, once exceeded, triggers a warning trap to the NMS. An admin uses this as an early-warning signal that the external file-pickup process has stalled, giving time to fix the collection job before local disk space becomes a real concern. Setting this object to 20 means the chassis fires a trap as soon as more than 20 completed accounting files are sitting unfetched, prompting the admin to check the external collection agent.