← Back to glossary Category: Operațional Backorder Quick answer: Order accepted but not deliverable from current stock — fulfilled at a known future date. Key takeawaysOMS marks the line as backorder with a realistic ETA (from supplier ASN)Customer gets confirmation with expected dateOn stock arrival, OMS auto-allocates the line and ships itTracking: backorder fulfillment rate, average duration, stock-out reason Definition Backorder = officially accepted order not deliverable from current stock. Unlike „stock-out” (full refusal), backorder implies a delivery promise at a known date, based on expected inbound (supplier ASN, issued PO, scheduled production). How to handle it correctly OMS marks the line as backorder with a realistic ETA (from supplier ASN) Customer gets confirmation with expected date On stock arrival, OMS auto-allocates the line and ships it Tracking: backorder fulfillment rate, average duration, stock-out reason Danger Backorder without realistic ETA hurts the customer relationship more than an honest refusal. Azuvio OMS forces explicit ETA + automates updates. Frequently askedBackorder vs pre-order?Pre-order = item not yet on the market (future launch). Backorder = existing item, temporarily out of stock. Where Azuvio fitsSoftware OMS Related termsOMS (Order Management System) — The system centralizing orders from every channel (EDI, online, phone, field agent) and orchestrating execution.WMS (Warehouse Management System) — The system orchestrating physical warehouse operations: receiving, putaway, picking, packing, shipping.OTIF (On-Time In-Full) — Share of orders delivered on time AND complete. Critical KPI for modern retailer relationships. Last updated: 2026-07-17