EDI 855: A Comprehensive Guide to Purchase Order Acknowledgment
Updated On 20 Mar, 2025

EDI 855: A Comprehensive Guide to Purchase Order Acknowledgment
In the world of electronic data interchange (EDI), efficiency and accuracy are essential for businesses to maintain smooth operations and effective communication. One of the most important documents in the EDI ecosystem is the EDI 855 Purchase Order Acknowledgment. This document plays a crucial role in the supply chain by confirming that a seller has received and reviewed a buyer's purchase order.
In this blog post, we will explore what the EDI 855 is, why it’s essential, and how it can benefit businesses involved in trading goods and services.
What is EDI 855?
EDI 855, also known as the Purchase Order Acknowledgment, is a document used by suppliers to confirm to buyers that they have received and processed their purchase orders (EDI 850). It allows suppliers to communicate the acceptance, rejection, or modification of a purchase order.
This document ensures that both parties—buyer and seller—are on the same page regarding the order’s terms, including item quantities, prices, and shipping details.
Key Components of EDI 855
- Purchase Order Number: A unique identifier for the buyer’s original purchase order.
- Order Status: Indicates if the purchase order is accepted, rejected, or partially accepted with modifications.
- Item Detail: Information about the ordered items, including product identifiers (e.g., SKU or UPC), quantities, and prices.
- Shipping Details: Expected shipment dates, shipping methods, and locations.
- Changes/Corrections: Any modifications to the original order, such as price adjustments, availability, or quantity changes.
How Does EDI 855 Work?
1. Buyer Sends a Purchase Order (EDI 850)
A buyer initiates the process by sending an EDI 850 Purchase Order to the seller.
2. Seller Responds with EDI 855
Upon receiving the purchase order, the seller reviews it and responds with an EDI 855 Purchase Order Acknowledgment. This document confirms whether the seller can fulfill the order as requested, needs to make changes, or cannot fulfill it.
3. Acceptance or Modification
The seller may:
- Accept the entire order
- Reject certain items
- Propose modifications
If any changes are required, they are communicated clearly through the EDI 855.
4. Buyer Reviews the Response
The buyer reviews the EDI 855 and either:
- Agrees to the proposed modifications
- Initiates further communication to resolve any discrepancies
Types of Acknowledgment
An EDI 855 response can take several forms, depending on the seller's ability to meet the buyer's requests:
- Full Acceptance: The seller agrees to fulfill the purchase order exactly as requested by the buyer.
- Partial Acceptance: The seller accepts parts of the order but proposes modifications to other items, such as changes in price, quantities, or delivery dates.
- Rejection: The seller is unable to fulfill the purchase order, either due to stock issues, pricing disputes, or other reasons.
Benefits of EDI 855
1. Improved Communication
EDI 855 ensures clear and timely communication between buyers and sellers, reducing the risk of misunderstandings regarding order details.
2. Operational Efficiency
Automating the purchase order acknowledgment process streamlines operations, reducing manual errors and saving time compared to traditional methods such as phone or email.
3. Order Accuracy
By confirming or adjusting the details of a purchase order, EDI 855 helps ensure that orders are processed accurately, reducing the likelihood of incorrect shipments.
4. Enhanced Supply Chain Visibility
Buyers gain more visibility into their orders, enabling them to better plan for inventory management and anticipate potential delays or changes in the order fulfillment process.
5. Compliance
Many large retailers and manufacturers require their suppliers to use EDI 855 as part of their EDI compliance programs. This ensures that all parties follow industry standards for order processing.
EDI 855 and Supply Chain Efficiency
In a fast-moving supply chain, every detail counts. The ability to quickly acknowledge, review, and correct purchase orders through an EDI 855 can significantly improve order management.
Both buyers and sellers benefit from:
- Reduced processing times
- Fewer mistakes
- Enhanced coordination
Conclusion
The EDI 855 Purchase Order Acknowledgment is a vital component of the modern supply chain, providing clarity, accuracy, and efficiency to the purchase order process. By automating the acknowledgment process, businesses can:
- Improve response times
- Minimize errors
- Keep their supply chains running smoothly
Adopting EDI standards like 855 can help build stronger relationships between trading partners and streamline the order management workflow.