Code 12: Invoice Incorrectly Extended

Peter Spaulding

By Peter Spaulding, Sr. Content Writer

Last Updated February 27, 2025

2 min read

In this article, learn about

  • What is a Code 12 deduction

  • How to prevent valid Code 12 deductions

  • How to dispute invalid Code 12 deductions


What is Deduction Code 12?

Code 12 deductions at Walmart are extremely rare. They're generated when there is a discrepancy within the invoice itself based on a variety of calculations.

How to Prevent Valid Code 12s

Review your EDI 810 (invoice) to be sure that it exactly matches the Purchase Order (EDI 850).

Can Code 12s be Disputed?

Technically code 12s are available to be disputed in APDP, though we've not seen much success here. In most cases, your best bet is to initiate a dispute with your buyer.

How to Dispute Invalid Code 12s

In APDP, create a dispute for the Code 12, and attach supporting documentation:

  • Invoice (EDI 810) showing the correct cost

  • Purchase Order (EDI 850) that matches the invoice 

Recover Your Revenue with SupplyPike

The supply chain is complicated, and things don’t always go as planned. When retailer fines and deductions start eating into your profits, SupplyPike is here to help. Our platform streamlines the recovery process, helping you identify and reclaim lost revenue so you can refocus on growing your business.

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