Walmart Chargeback Code 12: Invoice incorrectly extended
What this deduction means
When the invoice math is wrong, the extended amount (unit cost × quantity) does not add up correctly, Walmart recalculates and deducts the difference as Code 12.
Typical penalty: Equal to the calculation/extension error on the invoice
Common causes
- Unit cost × quantity miscalculated on a line
- Rounding or currency errors in the totals
- Line totals that do not match the invoice header total
How to prevent Walmart code 12
- Validate invoice math (cost × qty = extended) and reconcile line totals against the invoice total before transmitting
- Automate EDI 810 generation to remove manual calculation errors
Related EDI transactions
Source
SPS Commerce SupplierWiki: All Walmart Deduction Codes (secondary industry source) (Accessed 2026-07-09; pending official Retail Link verification)
Frequently asked questions
What is Walmart chargeback code 12?
When the invoice math is wrong, the extended amount (unit cost × quantity) does not add up correctly, Walmart recalculates and deducts the difference as Code 12.
How much does Walmart code 12 cost?
Typical penalty: Equal to the calculation/extension error on the invoice
How do I prevent Walmart chargeback code 12?
Validate invoice math (cost × qty = extended) and reconcile line totals against the invoice total before transmitting Automate EDI 810 generation to remove manual calculation errors
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