ASN - Advanced Shipping Notice

Advanced Shipping Notice (ASN) is an electronically sent notification of an upcoming or pending delivery sent directly to the buyer from a third-party logistics or the supplier, well in advance.

The ASN's structure or format basically depends on what your prospective customer might demand or what information you need to provide as a supplier or a 3PL partner. Typically an ASN includes:

• Order information – Purchase order (PO) number, supplier details.
• Delivery date and time – Estimated arrival date, time, and expected transit duration.
• Pallet codes – Number of pallets, cases, or units in the shipment.
• Product details – SKUs, item descriptions, and batch/lot numbers.
• Location information – Ship-from and ship-to addresses.
• Physical details of the consignment – Weight, dimensions, and packaging type.
• Freight information – Carrier name, tracking number, and shipment method.

The ASN is a notification sent before the shipment is dispatched, followed by an invoice post or at the time of delivery.

How ASNs Work in the Supply Chain

An ASN is sent before the shipment leaves the supplier's facility. This notification allows the receiving party to prepare for the delivery and cross-check shipment details before arrival.

The ASN Process Flow

• Supplier sends an ASN via Electronic Data Interchange (EDI) to the buyer.
• Buyer’s Warehouse Management System (WMS) receives the ASN and updates expected deliveries.
• Upon arrival, barcode scanning or RFID technology matches ASN details with the actual shipment.
• Discrepancies (such as missing or extra items) are flagged, and suppliers are notified for corrections.

Usually, ASNs are provided by the third-party logistics companies, but can also be done by the sellers themselves if there is no 3PL involved. Modern sellers never accept packages which are delivered without an ASN from the supplier.

What happens after the Advanced Shipping Notice is received?

To make it easier for the seller, the supplier can either put barcodes on all the shipped boxes, crates, and cases or maybe attach RFIDs and add that information to the ASN. When the shipment is received, the seller scans the shipment's serial shipping container code (SSCC) with the ASN to maintain accuracy. Any error identified is directly notified to the supplier and rectified.

To make sure that the same shipment hasn't been received before, the associated purchase order is pulled out from the inventory system. Again, there can certainly be times when the order would be the same but not the SSCC.

The Importance and Benefits

ASN-based shipping and receiving practices assist businesses and buyers with quick and accurate loading and unloading of shipments, ensuring efficient sorting and management of inventory.

Benefits of ASNs for Businesses

ASNs improve supply chain efficiency by reducing errors, streamlining warehouse operations, and enhancing inventory accuracy.

1. Faster & More Accurate Receiving

• Warehouse teams know what’s arriving in advance, enabling pre-sorting.
• Reduces unloading time and ensures efficient cross-docking.

2. Reduced Shipping & Receiving Errors

• ASN barcode scanning eliminates human errors in manual data entry.
• Reduces order mismatches, ensuring accurate shipments.

3. Improved Inventory Visibility

• ASNs integrate with Inventory Management Software for real-time stock tracking.
• Helps businesses optimize stock levels, reducing overstocking and stockouts.

4. Better Compliance & Supplier Accountability

• ASN minimizes human errors, preventing mix-ups with similar product SKUs.
• Ensures vendors meet shipment accuracy requirements, reducing costly mistakes.

If a discrepancy occurs between the order placed and the shipment received, ASN makes it quick to figure it out. The seller can always claim shipping insurance if anything goes missing or if there is a changed number of shipments received at the other end.

ASN offers multiple logistical and supply chain benefits; it helps with accurate and on-time dispatch and delivery. If someone from the warehouse team, who is in charge of incoming consignments, is notified about expected shipments, they can easily arrange outbound transportation accordingly.

Best Practices for Implementing ASNs

To maximize the benefits of ASNs, businesses should follow these best practices:

Use EDI or API for Seamless ASN Integration

• Ensure real-time data exchange between suppliers, buyers, and logistics teams.
• Automate ASN processing for faster, error-free transactions.

Train Warehouse Teams on ASN Workflows

• Educate staff on scanning barcodes, RFID matching, and discrepancy reporting.
• Reduce receiving errors by ensuring teams understand ASN verification processes.

Establish ASN Compliance Standards with Suppliers

• Require suppliers to send ASNs before shipment dispatch.
• Standardize ASN formatting for consistency across vendors.

ASN vs. Other Shipping Documents

Unlike standard shipping documents that accompany a delivery, ASNs are proactive notifications sent before a shipment arrives. The table below highlights key differences:

The Challenges Involved

To implement the ASN system, certain investments are needed. RFIDs and barcode scanning are core components for the ASN system to work effectively. This means that the entire supply chain should meet these requirements. Because of the financial investments involved, larger suppliers and businesses often adopt ASN before smaller firms.

When it comes to accuracy, challenges with ASN include item quantity mismatches, line or header errors, etc. These inaccuracies can lead to unexpected delays and lost productivity. Once the error is noticed, the client can notify the vendor, and the entire process must be repeated with corrected figures and a new ASN sent.

Additionally, training staff to become proficient with the ASN system can be a task. ASN can only assist after the team is adequately trained.