SUPPLIER ONBOARDING · ROWDY EDI
What Costco Wholesale needs from you, in EDI
A plain-English reference to what Costco Wholesale requires from suppliers in EDI — the documents, labels, and rules — plus a free check to see if yours would pass.
Costco Wholesale requirements
| Documents you must return | 855 · 856 · 810 |
| X12 version | 004010 |
| Line-item key | UP (UPC) |
| Advance Ship Notice (856) | Required |
| SSCC-labeled cartons | Required on every ASN |
Club/warehouse. Requires PO ack, an SSCC-labeled ASN, and a reconciling invoice.
We hand you a real Costco Wholesale purchase order · you upload your responses · instant scorecard + fixes