← Back to glossary Category: Operațional · Acronym: ATP ATP – Available to Promise Quick answer: The stock quantity that can be safely promised to a new order, accounting for on-hand stock, allocations and future inbound. Key takeawaysSimple ATP — on current available stockCTP (Capable to Promise) — includes production/supply capacityATP over horizon — available at a future date, including scheduled receipts What ATP is ATP (Available to Promise) is the stock you can realistically promise to a new order by a given date. Base formula: physical stock − allocated stock + confirmed inbound (future receipts/production). Why it isn't equal to physical stock Physical warehouse stock includes units already reserved for other orders. ATP subtracts these allocations and adds confirmed future inbound, giving the correct answer to ‘can I promise now?'. Variants Simple ATP — on current available stock CTP (Capable to Promise) — includes production/supply capacity ATP over horizon — available at a future date, including scheduled receipts How Azuvio helps The Azuvio OMS computes ATP in real time on unified stock, allocations and confirmed receipts/purchase orders, showing B2B customers in the portal exactly what can be delivered and when — no false promises. Frequently askedDifference between ATP and physical stock?Physical stock is everything in the warehouse. ATP is what you can truly promise: physical stock minus existing allocations, plus confirmed future inbound. Only ATP avoids over-promising.What is CTP (Capable to Promise)?An ATP extension that also considers the capacity to produce or supply on time, not just existing stock. Useful for make-to-order and long lead times.How does ATP help in the B2B portal?Customers see real availability and a realistic delivery date at order placement, not gross stock. Result: fewer cancellations, surprise backorders and complaints. Where Azuvio fitsSoftware OMSPortal B2BSoftware WMS Related termsStock allocation — Reserving available stock for confirmed orders by priority rules to prevent over-promising.OMS (Order Management System) — The system centralizing orders from every channel (EDI, online, phone, field agent) and orchestrating execution.Backorder — Order accepted but not deliverable from current stock — fulfilled at a known future date.Safety stock — Extra buffer inventory held to prevent stockouts caused by demand or supply variability. Last updated: 2026-07-06