A carton content accuracy chargeback means that the products or the product quantities in a box Amazon received does not match exactly the information in the Advance Shipment Notification (ASN). [1][2]
2 What triggers it & how to prevent it Final composition for this type
✕ What triggers it
Defect
Meaning
Counting example
Shortage / missing ASINs
At least one unit of an item is expected in the box per the ASN, but fewer units than expected are present on arrival [1]
| Case pack defect | Inner/master pack labelling creates a mislabeling issue [1] | ASN says 10 units; box has five 2-unit case packs → counted as 10 missing units, $1.67 × 10 = $16.70. When an item-level barcode visible on a case pack or master pack is not the expected sellable unit, all units in the box are counted [1] |
If a defect occurs across multiple boxes, the number of defects is multiplied by the number of boxes to arrive at the final chargeback amount. [1]
✓ How to prevent it
Provide accurate ASN information for each shipment; ship no unexpected products [1][2]
Ensure barcodes on each unit map to the correct ASIN in the catalog [1][2]
If sending case packs (inner boxes): make sure case packs are not transparent, and the item-level barcode is visible only on the sellable items[1][2]
Do not place item barcode labels on top of the case pack — the inner-pack barcode gets scanned instead of the sellable units, causing a discrepancy between received and stowed units [1][2]
Designer note (internal)Internal note — not shown in productG 纸箱型 · 对账图。左 ASN（表格：ASIN + qty），右 Received carton（实物剖面）。中间连线： - 🔴 少件 → Shortage - 🔴 出现 ASN 上没有的商品 → UIO - 🔴 同款多出 → UQO - 🔴 case pack 上贴了商品级条码 → Case pack defect（画一个内盒条码被扫的错误路径，标 整箱计费，NA only） 费率标注按大区切换。
Internal note — not shown in product校验报告 P4-6 悬案已解决 —— CS 的 €0.22 / €0.30 / €0.75 出处即 UK 页（€/£ 双币标注），数字正确。
◻ Official exemptions — not displayed: Amazon publishes no exemption for this typeInternal note — not shown in productAVC 未公布豁免（EU 页面的适用市场/品类限定属适用范围，写在 4 而非 6）。
5 Documents required for dispute
For item labels on case packs / master packs — images showing a face-open box, the inner packs, and the individual sellable units of the ASIN, showing how items are packed inside the box. All barcodes must be clearly visible.[1]
For wrong items received compared with the ASN — a clear image of the item barcode for the missing item[1][2]
6 Evidence examples
✓ Approved submission
✕ Denied submission
1 Definition≠ Differs from North America
A carton content accuracy chargeback means that the products or the product quantities in a box Amazon received does not match exactly the information in the Advance Shipment Notification (ASN). [1][2]
2 What triggers it & how to prevent it Final composition for this type
✕ What triggers it
Defect
Meaning
Counting example
Shortage / missing ASINs
At least one unit of an item is expected in the box per the ASN, but fewer units than expected are present on arrival [1]
If a defect occurs across multiple boxes, the number of defects is multiplied by the number of boxes to arrive at the final chargeback amount. [1]
Only three defect classes are published — UIO, UQO and Shortage; case pack defect is not listed[2]
✓ How to prevent it
Provide accurate ASN information for each shipment; ship no unexpected products [1][2]
Ensure barcodes on each unit map to the correct ASIN in the catalog [1][2]
If sending case packs (inner boxes): make sure case packs are not transparent, and the item-level barcode is visible only on the sellable items[1][2]
Do not place item barcode labels on top of the case pack — the inner-pack barcode gets scanned instead of the sellable units, causing a discrepancy between received and stowed units [1][2]
Stick printed box labels on the correct boxes so each label matches the physical contents, the ASN, and the final recorded data in Vendor Central [2]
For cartons with multiple units, set the catalogue attributes item per inner pack (IPIP) and item per master pack (IPMP) correctly; do not label a mono-ASIN outer carton with the single-unit EAN — use an SSCC/AMZNCC label, or a carton-level EAN/GTIN that differs from the unit EAN [2]
Designer note (internal)Internal note — not shown in productG 纸箱型 · 对账图。左 ASN（表格：ASIN + qty），右 Received carton（实物剖面）。中间连线： - 🔴 少件 → Shortage - 🔴 出现 ASN 上没有的商品 → UIO - 🔴 同款多出 → UQO - 🔴 case pack 上贴了商品级条码 → Case pack defect（画一个内盒条码被扫的错误路径，标 整箱计费，NA only） 费率标注按大区切换。
Active in the Amazon stores for the UK, Germany, France, Italy and Spain[2]
Categories — Hardlines, Softlines, Consumables (excluding Beer, Wine & Spirits), Books, Entertainment Media; does not apply to Amazon Fresh, Advantage, Direct Fulfilment or Vendor Flex [2]
Internal note — not shown in product校验报告 P4-6 悬案已解决 —— CS 的 €0.22 / €0.30 / €0.75 出处即 UK 页（€/£ 双币标注），数字正确。
◻ Official exemptions — not displayed: Amazon publishes no exemption for this typeInternal note — not shown in productAVC 未公布豁免（EU 页面的适用市场/品类限定属适用范围，写在 4 而非 6）。
5 Documents required for dispute≠ Differs from North America
For wrong items received compared with the ASN — a clear image of the item barcode for the missing item[1][2]
