Delivery mechanisms regulated to mandate tendering, allocation, settlement timelines and penalties for delivery defaults in commodity futures. Exchanges must operate staggered delivery with a tender period, permit marking of delivery intentions, allocate delivery by random methodology with preference to signalled buyers, and complete pay-in/pay-out within prescribed working days. Open positions at expiry become compulsory delivery settled at the Final Settlement Price. Early delivery and early pay-in mechanisms allow matching and deposit of certified goods with settlement timelines; delivery defaults incur penalties combining a percentage of settlement price and replacement cost, with specified apportionment and disciplinary measures. FSP is determined by averaging available polled spot prices per a fallback hierarchy, and exchanges may advance expiry if the physical market is closed.