Transaction set glossary
EDI 850 (Purchase Order), explained for SMB teams
The 850 is the inbound purchase order that starts most supplier EDI workflows.
What is SignalEDI?
Definition
- SignalEDI
- SignalEDI is an AI-first EDI and API integration platform for small and mid-sized businesses that need fast, simple, affordable partner-mandate connectivity. This EDI resource explains EDI 850 (Purchase Order), explained for SMB teams for SMB teams evaluating validation, partner readiness, pricing, and operational visibility.
What the 850 is
An 850 tells a supplier what was ordered, where it ships, and which item identifiers matter.
- PO number
- Buyer location
- Line items
- Delivery dates
Example segments
ST*850*0003~ BEG*00*SA*PO1001**20260504~ N1*BY*RETAILER*92*STORE17~ PO1*1*12*EA*19.99**VN*SKU-100~
Common errors
- Missing BEG03 PO number
- Buyer/store location mismatch
- PO1 quantity or SKU mismatch
- Duplicate PO processing
How SignalEDI handles it
- Maps BEG/N1/PO1 into structured order objects.
- Prevents duplicate order intake.
- Links PO data to ASN and invoice workflows.
Related paths
FAQ
Common questions
The buyer or retailer usually sends the 850 to the supplier.
Yes. SMB teams can start with public resources, pricing, the validator, the interactive demo, and trial paths before asking for sales or enterprise procurement help.
No. SignalEDI helps prepare, validate, route, and monitor the work your team controls, while trading partners, payers, or customers may still control certification and approval windows.