In this article, learn about:
Common supply chain acronyms and what they mean
Where each term fits into the supplier workflow
Supply chain acronyms are the operating language behind how product moves from a supplier to the shelves of a store. Whether you’re dealing with an EDI transmission, a freight appointment, or shipment methods, these terms are not just jargon. They are the operational signals by which your business executes orders, moves inventory, and gets paid.
We’ve grouped key supply chain acronyms by where they show up in the day-to-day workflow:
Electronic Data Interchange
Order and Invoicing
Inventory and Planning
Freight and Transportation
To quickly search the list, hit CRTL + F (PC) or CMD + F (Mac OS).
Electronic Data Interchange (EDI)
Electronic Data Interchange (EDI) is the foundation of how retailers, suppliers, carriers, and warehouses exchange information. Purchase orders, shipment notifications, invoices, and payment details all flow through EDI systems, making it one of the most critical components of supply chain operations.
Missing acknowledgments, inaccurate shipment notices, or rejected invoices can delay orders, disrupt fulfillment, create compliance issues, and ultimately slow down payment. Understanding common EDI terms can help you communicate more effectively with trading partners, troubleshoot issues faster, and reduce costly disruptions throughout the order-to-cash process.
Acronym | Term | Definition |
EDI | Electronic Data Interchange | The computer-to-computer exchange of standardized business documents in a machine-processable format |
Purchase Order | EDI transaction used to place an order | |
855 | Purchase Order Acknowledgement | EDI transaction used to confirm the receipt and acceptance of a purchase order |
Advance Ship Notice | EDI transaction used to provide shipment details before goods arrive | |
Invoice | Electronic invoice sent from supplier to customer | |
820 | Payment Order/Remittance Advice | EDI transaction that details payments and any deductions applied |
997 | Functional Acknowledgment | EDI document that confirms receipt of an EDI transaction |
VAN | Value-Added Network | Service that facilitates EDI document transmission |
AS2 | Applicability Statement 2 | Protocol commonly used to securely transmit EDI documents |
American National Standards Institute | The organization established to define, maintain, and coordinate standards in the United States | |
ASC X12 | The Accredited Standards Committee X12 | The organization established by ANSI to develop uniform standards for electronic data exchange |
Related Reading: What is EDI? A supplier’s guide to navigating document exchange
Order and Invoicing
Once orders are received, suppliers must accurately pick, ship, document, and invoice every transaction. Small errors during this stage can create larger downstream issues, including delayed payments, invoice disputes, chargebacks, and reconciliation challenges.
Acronym | Term | Definition |
Purchase Order | Buyer's request for goods that outlines quantities, pricing, and delivery requirements | |
ASN | Advance Ship Notice | Notification sent before a shipment arrives detailing its contents |
AP | Accounts Payable | Team or department responsible for processing and paying invoices |
AR | Accounts Receivable | Money owed by customers for delivered goods or services |
COD | Cash on Delivery | Payment method where payment is collected at the time of delivery |
LC | Letter of Credit | Financial document issued by a bank that guarantees payment to a supplier if agreed-upon conditions are met |
SO | Sales Order | Internal document created to process and fulfill a customer order |
RMA | Return Merchandise Authorization | Approval process used when products are returned by a customer |
Inventory and Planning
This stage governs how inventory is planned, replenished, and positioned across the supply chain. It connects demand signals to production and purchasing decisions, ensuring the right product is available in the right place at the right time.
Errors or blind spots in this stage can quickly lead to stockouts, excess inventory, missed or missed sales, all of which directly impact service levels and working capital.
Acronym | Term | Definition |
Stock Keeping Unit | Unique identifier used to track individual products | |
MOQ | Minimum Order Quantity | Smallest quantity a supplier will accept for production or fulfillment |
ROP | Reorder Point | Inventory level that triggers replenishment |
DOS | Days of Supply | Estimated number of days current inventory will last |
SS | Safety Stock | Additional inventory held to reduce risk of stockouts |
LT | Time between placing an order and receiving inventory | |
MRP | Material Requirements Planning | System used to plan manufacturing and material needs based on demand |
ATP | Available to Promise | Inventory available that can be committed to future orders |
Bill of Materials | Complete list of raw materials and components required to produce a product | |
Vendor Managed Inventory | Model where the supplier is responsible for managing and replenishing inventory levels | |
Economic Order Quantity
| Formula used to determine the optimal order quantity that minimizes total inventory costs | |
E&O | Excess and Obsolete Inventory | Inventory that cannot be sold or is no longer needed due to demand changes |
FIFO | First In, First Out | Inventory valuation and fulfillment method where the oldest stock is used or shipped first |
LIFO | Last In, First Out | Inventory valuation method where the newest stock is used or shipped first |
FEFO | First Expired, First Out | Inventory management method where items with the earliest expiration dates are prioritized for shipment |
JIT | Just In Time | Inventory strategy where goods are produced or received only as they are needed for use or fulfillment |
Freight and Transportation
This section covers the movement of product through carriers, distribution centers, and retail networks. It is one of the most execution-sensitive parts of the supply chain, where timing, capacity, and cost directly determine whether inventory arrives as planned.
Acronym | Term | Definition |
Bill of Lading | Transportation document that serves as a contract between the shipper and carrier | |
Proof of Delivery | Documentation confirming a shipment was successfully delivered | |
DC | Distribution Center | A retailer facility, typically a warehouse, that receives and stores goods |
DSD | Direct Store Delivery | A fulfillment method where a carrier delivers goods directly to the storefront, instead of a warehouse or distribution center |
Less Than Truckload | Shipment that shares trailer space with other freight | |
FTL | Full Truckload | Shipment that utilizes an entire trailer |
TL | Truckload | General term for full trailer freight |
OTR | Over-the-road freight | Freight transported via trucks over highways |
3PL | Third-Party Logistics | Outsourced logistics provider |
SCAC | Standard Carrier Alpha Code | Unique code used to identify transportation carriers |
GLN | Global Location Number | A unique number that is used to identify a location |
National Motor Freight Classification | A system that standardizes freight classes to determine shipping rates | |
NMFTA | National Motor Freight Traffic Association | The organization that oversees the NMFC and issues SCAC codes |
ETA | Estimated Time of Arrival | Expected shipment arrival time |
ETD | Estimated Time of Departure | Expected shipment departure time |
PRO | Progressive Rotating Order Number | Shipment tracking number assigned by a carrier` |
FSC | Fuel Surcharge | Additional freight fee tied to fuel costs |
TI/HI |
| The pattern in which boxes are stacked on a pallet |
OS&D | Over, Short, and Damaged | Freight discrepancies discovered during transit or delivery |
OTIF | On Time In Full | A compliance metric that tracks if shipments arrive at the right time and in the right amount |
Related Reading: A Supplier’s Guide to Freight, Carriers, and Logistics
Summary
Learning supply chain acronyms is not about memorizing terminology. These terms are part of the daily conversations across operations, logistics, sales, compliance, and finance teams. Understanding them helps teams communicate more effectively, identify issues faster, and avoid costly mistakes. Speaking the language of the supply chain makes it easier to navigate the complexity behind getting products to market.
Explore More Supply Chain Acronyms
The supply chain industry is full of specialized terminology, and these acronyms are just the beginning. If you're looking to understand more terminology, explore our additional acronym guides below:
