Earlier versions of this guide said to post summary.withdrawer_received on the terminal event. That field can also count legs that were claimed but never paid. outcome.delivered_amount counts only money that provably reached the customer — book that, and refund your customer only summary.withdrawer_pending_refund (absent means 0).

WITHDRAWAL_PARTIALLY_FUNDED is sent on every leg change, and data.reason says which: LEG_SETTLED (money arrived, including a dispute the depositor won), PLEDGE_EXPIRED, PLEDGE_REJECTED (the depositor lost a dispute) and SHORTFALL_TO_BANK (the remainder went to the company account). Read the running total from progress.settled_amount; even FULLY_SETTLED there is not the close — wait for the terminal event, which always comes after the last progress event.