Costco Code CST-SHORT: Depot receiving quantity shortage (EDI 812 / Depot AP Shortage).
Costco Depot Shortage deductions represent inventory quantity discrepancies identified when shipments are received at Costco regional depots. Communicated via EDI 812 Credit/Debit Adjustments or Depot AP debit memos, suppliers resolve these by matching delivery receipts against depot dock logs.
Why Costco issues Code CST-SHORT.
- Costco depot receiving clerks miscounted pallet layers or master cases during offload
- Invoice quantity exceeded the physical pallet count delivered to the depot dock
- Split delivery where part of the purchase order arrived on a separate appointment
Documents that win.
- Signed Proof of Delivery (POD) with Costco Depot receiving stamp
- Bill of Lading (BOL) showing total case count, pallet count, and trailer seal number
- Original Purchase Order and Vendor Invoice (EDI 810)
- EDI 812 adjustment detail reference
How to dispute it.
Find remittance line for Code CST-SHORT in Costco Depot Accounts Payable / Vendor Portal & EDI 812 Credit/Debit Adjustment. Note the PO, invoice number, and claim amount.
Collect and verify documentation: Signed Proof of Delivery (POD) with Costco Depot receiving stamp, Bill of Lading (BOL) showing total case count, pallet count, and trailer seal number, Original Purchase Order and Vendor Invoice (EDI 810). Ensure piece counts and timestamps match.
File dispute claim package via Costco Vendor Portal selecting claim reason for Code CST-SHORT (Depot receiving quantity shortage (EDI 812 / Depot AP Shortage)) and attaching all verification documents.
Monitor claim status in Costco Vendor Portal until approved (30-45 days). Approved credit memo will apply to a future settlement remittance.
Costco accounts payable adjustment and depot shortage claims should be disputed within 6 to 12 months through Depot AP and buyer resolution. Check your remaining filing window with our free Dispute deadline checker.
Source: Costco supplier guidance · Verified by Laxmi Narayan · 2026We audit remittances, assemble proof documents, and handle end-to-end Costco deduction recovery on pure contingency. We'll check whether yours is disputable, free, in 72 hours.