Purchase Order Change

The EDI 860 Purchase Order Change allows a buyer to modify an existing 850 Purchase Order — changing quantities, dates, prices, ship-to locations, or cancelling line items — without issuing a brand new PO.

Industries

Retail Manufacturing Distribution

Direction

Buyer → Supplier

Common Use Cases

Retailer reduces order quantity due to inventory adjustment
Buyer reschedules delivery date to a later window
Buyer cancels one or more line items from an existing order

Key Segments

BCH Beginning Segment — change PO number, original PO number, purpose code

POC Line Item Change — original and changed line details

PO1 Baseline Item Data — updated quantity or price

DTM Date/Time Reference — new ship date or cancel date

N9 Reference Identification — original PO reference number

Transaction Flow

Sent after an 850 has been acknowledged (855). Supplier typically responds with an updated 855 or 865 PO Change Acknowledgment. Unacknowledged changes are a major source of chargebacks.

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Common Validation Errors

BCH02 change purpose code is critical: "00" (Original, incorrect — use 04 for change), "04" (Change), "01" (Cancellation). Always reference the original PO in BCH05.

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Other Transaction Sets

850 855 810 856 820 997 832 846 204 210 940 945 943 214