Amazon Vendor ASN Version 2 Changes from 1st August

Amazon has started issuing reminders about the upcoming rollout of ASN Version 2, a topic we've already covered in detail, but one that’s worth highlighting again for any Vendors who haven’t yet made the necessary updates.

In short:

a) Changes are coming,
b) Penalties are likely to follow,
c) Compliance is essential.

With the 1st August 2025 deadline approaching, it’s important to ensure internal processes are aligned and systems are ready.

In close partnership with Amazon’s technical team, we would like to clarify that the August 1st deadline specifically applies to the new labelling requirements. This deadline does not pertain to the upgrade to ASN version 2, which remains on a separate timeline.

Why is Amazon making these changes?

The goal is to improve receiving efficiency, faster inbound, fewer shortages, and better accuracy. These updates also align Amazon’s processes with GS1 industry standards and build on the ASN Version 2 changes introduced last year.

Amazon is updating requirements across several areas including:

• Pallet and box labels – New format standards, particularly for single- and mixed-SKU shipments.
• EDI DESADV (ASN) transmission – Enhancements to improve shipment accuracy and supply chain visibility.
• Small parcel tracking – Introduction of mandatory tracking numbers for each parcel.
• Additional EDI codes – Now supporting SSCC and SCAC references to meet wider industry standards.

Label Requirements Update

Effective 1 August 2025
Applies to all shipments to EU/UK fulfilment centres, including Pallet Ordering (Acapulco).

1. Non-Palletised Single-SKU Boxes

GTIN-13/14 barcodes are no longer sufficient.
Each box must be labelled with one of the following:

• SSCC (Serial Shipping Container Code), or
• AMZNCC (Amazon Container Code)

Note: We recommend SSCCs due to their flexibility and broader compatibility.

2. Single-SKU Pallets

Pallets must be labelled on at least two adjacent sides (ideally all four) with:

• An SSCC or AMZNCC barcode
• The text: “single-SKU” or “single-ASIN”

Each box on the pallet must also be labelled with one of the following:

• GTIN (GTIN-13/14), or
• SSCC or AMZNCC (barcode and human-readable text)

Important: If using GTIN, you must be enrolled in the Goldlist Receive programme with correctly configured product data. Missing carton labels can cause issues with order-level attribution.

3. Mixed-SKU or Mixed-ASIN Pallets

Pallets must be clearly marked with:

• The text “mixed-SKU” or “mixed-ASIN”, and
• An SSCC or AMZNCC label on at least two sides

Each box inside must be labelled with one of the following:

• GTIN
• SSCC
• AMZNCC

EDI DESADV (ASN version 2) Upgrade

If you're using EDI DESADV to transmit ASNs or planning to, Amazon’s new requirements apply to how data is structured in your messages. The aim is to improve shipment accuracy from pallet to box to item level.

Learn more about EDI with Amazon Vendor here.

1. Pallet-Level Mapping (PAC with 201/202 Loops)

ASNs must now include the number of boxes per pallet. This allows Amazon to scan a pallet SSCC and immediately match it to the correct purchase order and quantities, improving inbound efficiency, particularly for single-SKU pallets.

Note: This requires assigning specific cartons to specific pallets. It’s straightforward for single-SKU pallets, but more complex for mixed loads.

2. Hierarchical Box Tracking (PAC with PK/CT)

Vendors must list which boxes are on which pallet, including the item breakdown within each box. This level of hierarchy is essential for traceability, especially with mixed pallets or complex shipments.

Implication: To reduce admin overhead, some vendors may shift towards simpler shipment types (e.g. single-SKU pallets or one-pallet shipments).

3. Small Parcel Shipment Tracking

Each non-palletised box must now include its own tracking number in the ASN.
Previously, only one tracking number was submitted per shipment. The updated structure enables box-level tracking, helping to reduce chargebacks and support faster resolution of shortages or delivery issues.

Manually entering this information is time-consuming. Consider using systems that automatically capture and transmit tracking references per parcel.

4. Support for New EDI Codes

Amazon now supports additional identifiers:

• SSCC (Serial Shipping Container Codes)
• SCAC (Standard Carrier Alpha Codes)
• Carrier GLNs (Global Location Numbers)

   

Need help updating your EDI system? See the DESADV v2 specs, available since April 15, 2024

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Why These Changes Matter for You

While these updates are driven by Amazon’s need to modernise its inbound operations, the benefits for vendors are tangible, especially if you’re regularly dealing with chargebacks, delays, or messy tracking.

Faster Check-Ins

Proper pallet and box labelling (using SSCC or AMZNCC) means your deliveries get scanned and received more quickly, up to 40% faster. That means less time waiting for stock to go live, and fewer headaches chasing stuck shipments.

Improved Accuracy

When your ASNs are structured correctly, Amazon can match each box to the right purchase order instantly. This can improve receiving accuracy by up to 30%, cutting down on disputes and manual investigations.

Fewer Chargebacks and Shortages

Most chargebacks come from mismatched data. By aligning your physical shipment with the ASN at the box level, you’re significantly reducing the risk of compliance fines and frustrating shortage claims.

Final Thoughts

These updates will impact how Amazon handles your shipments, whether you're sending small parcels or full pallets. Now is a good time to review your labelling processes and make sure everything is aligned ahead of the August deadline.

If you work with a 3PL or use software to manage ASNs and labels, it’s worth double-checking that those systems are updated to meet the new requirements.

Staying compliant means fewer delays, fewer disputes, and smoother operations all around.