How to dispute Costco deduction code CB-SHT (Shortage chargeback).
A step-by-step guide for CPG operators: what triggers Costco code CB-SHT, the exact evidence required, the filing window in Costco Supplier Portal, the typical success rate, and the SOP fix that prevents repeats.
- Costco code CB-SHT (Shortage chargeback) — Costco depot or warehouse received fewer cases than the invoice declared. Common on mixed pallets and floor-loaded trailers.
- File in Costco Supplier Portal within 60 days from chargeback date in supplier portal.
- Required evidence: Packing list, BOL, weighed shipment record, trailer seal log, and depot receiving record.
- Typical success rate when evidence is complete: 60–75% when shipment was palletized and weighed.
- Prevent repeats by: Move from floor-load to palletized; weigh every outbound trailer; reconcile packing-list to BOL.
What Costco code CB-SHT actually means
Costco depot or warehouse received fewer cases than the invoice declared. Common on mixed pallets and floor-loaded trailers. On the remittance it appears as code CB-SHT — Shortage chargeback. Disputes are filed in Costco Supplier Portal, and the filing window is 60 days from chargeback date in supplier portal.
Source: Costco Vendor Compliance — Receiving Standards. Last reviewed: 2026-04-17.
Step-by-step: how to dispute Costco code CB-SHT
- 1
Confirm the deduction is in scope
Locate the deduction on your Costco remittance and confirm the reason matches code CB-SHT (Shortage chargeback). Note the deduction post date — your filing window starts there.
- 2
Pull the evidence packet
Gather: Packing list, BOL, weighed shipment record, trailer seal log, and depot receiving record.
- 3
File the dispute in Costco Supplier Portal
Open Costco Supplier Portal, locate the deduction, and attach your evidence packet. Filing window: 60 days from chargeback date in Supplier Portal. Late filings are auto-denied — file as soon as the packet is complete.
- 4
Track the response
Most Costco dispute responses land in 30–60 days. Approved disputes are credited on the next remittance cycle. Denied disputes can be re-filed once with additional evidence; track the re-file deadline.
- 5
Fix the root cause
Move from floor-load to palletized; weigh every outbound trailer; reconcile packing-list to BOL.
Required evidence
Packing list, BOL, weighed shipment record, trailer seal log, and depot receiving record.
Build the packet once — most Costco disputes lose because the evidence arrives incomplete, not because the underlying dispute is weak.
Timeline & deadlines
- Filing window
- 60 days from chargeback date in Supplier Portal
- Response window
- Most Costco responses land in 30–60 days from filing.
- Typical success rate
- 60–75% when shipment was palletized and weighed
Why Costco code CB-SHT deductions happen
Costco depot or warehouse received fewer cases than the invoice declared. Common on mixed pallets and floor-loaded trailers. In practice, this is rarely a single root cause. Costco's receiving and audit systems flag shortage chargeback the moment a discrepancy hits the threshold — so even a clean shipment can take a deduction if the paperwork or the EDI handshake doesn't reconcile cleanly on the retailer's side. That's why almost every code CB-SHT packet hinges on documentation timing, not on whether the shipment was actually correct.
How to prevent Costco code CB-SHT going forward
Move from floor-load to palletized; weigh every outbound trailer; reconcile packing-list to BOL.
Filing wins back the dollars; the SOP fix is what stops you from filing the same dispute again next quarter.
Want this filed for you?
ClearChain runs Costco dispute filing end-to-end. Flat $5,000/month, no percentage of recoveries. If we don't recover at least 3x your fee, you get your money back.
Flat $5,000/month, month-to-month. If we don't recover at least 3x your fee, you get your money back.
Typical response: same business day.