Code 12: Invoice Incorrectly Extended

Overview

Code 12 deductions are extremely rare and are generated when Walmart identifies discrepancies in an invoice based on various calculation errors.

Code 12 deductions typically result from invoice calculation discrepancies.

How to Prevent Valid Code 12 Deductions

• Review your EDI 810 invoice carefully before submission.
• Verify that the invoice exactly matches the corresponding EDI 850 purchase order.
• Confirm all calculations, quantities, pricing, and totals are accurate.

Can It Be Disputed?

Yes. Code 12 deductions can technically be disputed through the Accounts Payable Disputes Portal (APDP). However, successful disputes are uncommon, and in most cases Walmart recommends working directly with your buyer.

Supporting Documentation

• EDI 810 invoice showing the correct information.
• EDI 850 purchase order that matches the invoice.

Conclusion

Although Code 12 deductions are uncommon, they generally stem from invoice calculation discrepancies. Carefully validating invoices against purchase orders before submission can help prevent these deductions. When a Code 12 deduction is invalid, suppliers should gather supporting documentation and dispute it through APDP or work directly with their Walmart buyer.