advanced shipping notice (ASN)

An advanced shipping notice (ASN) is an electronic message sent by a supplier before a physical shipment arrives, describing the contents of the shipment, how it is packaged, and the planned arrival details. In industrial and regulated manufacturing environments, ASNs are typically structured documents exchanged through EDI, supplier portals, or integrated ERP/MES systems.

What an ASN typically includes

Although formats vary by customer and standard, an ASN commonly includes:

• Shipment identifiers, such as ASN number and shipment ID
• Linked commercial documents, typically purchase order (PO) numbers and line items
• Carrier and logistics data, such as carrier name, tracking number, shipment method, and planned delivery date
• Packing structure, including pallets, cartons, and container IDs with quantities per package
• Item-level details, including part numbers, revisions where applicable, lot/batch numbers, and serial numbers when required
• Label references, such as barcodes or license plate numbers used for scanning on receipt
• Regulatory or quality flags, such as hazardous classification, temperature control indication, or special inspection requirements

Operational role in manufacturing and logistics

In manufacturing and operations, ASNs are used to synchronize inbound logistics with production and quality workflows. Systems such as ERP, WMS, and MES may consume ASN data to:

• Prepare receiving and inspection activities before the truck arrives
• Align received quantities with open POs and work orders
• Update expected-on-hand and shortage views for materials planning and backlog risk assessment
• Drive barcode or license-plate scanning on the dock and in stockrooms
• Support traceability by pre-registering lots, serial numbers, and expiration dates

In regulated and aerospace environments, ASNs can also be tied to required documents such as certificates of conformity, material certifications, and inspection results, though those documents may be transmitted through separate channels.

What an ASN is not

• It is not the physical shipment itself; it is an electronic notification about an upcoming shipment.
• It is not a purchase order; it references and confirms how existing POs and lines are being fulfilled.
• It is not a proof of delivery; actual receipt and inspection records are captured separately in receiving, warehouse, or MES systems.

Common confusion

• ASN vs. packing list: A packing list is a physical or digital document that travels with the shipment. An ASN is typically sent in advance and is structured for system integration, enabling automated receiving and planning.
• ASN vs. shipping confirmation: A simple shipping confirmation may only state that something has shipped. An ASN usually provides detailed, item-level, and package-level data that is mapped to POs and used by downstream systems.

Connection to backlog and supply risk

For supply chain and backlog execution analysis, ASNs provide forward-looking visibility into what material is actually in transit, how it maps to specific POs and parts, and when it is expected to arrive. When integrated with ERP, MRP, and production scheduling, this data helps organizations distinguish between theoretical supplier commitments and material that is physically on its way.