EDI (Electronic Data Interchange)
Standardised electronic exchange of business documents (orders, invoices) between trading partners; common in public sector supply chains.
Definition
EDI stands for Electronic Data Interchange, the standardised electronic exchange of business documents between trading partners. Common EDI documents include purchase orders, order acknowledgements, dispatch advice, invoices, and remittance advice. EDI is widely used in UK public sector supply chains, particularly for high-volume routine purchasing (NHS clinical consumables, local authority FM, school supplies through frameworks like KCS). The standardisation reduces transaction cost compared with manual processing.
How it works in practice
EDI implementations use defined message standards: EDIFACT (the international standard, widely used in UK retail and manufacturing), TRADACOMS (the older UK retail standard), X12 (the dominant US standard), and increasingly XML/JSON-based modern standards like PEPPOL (Pan-European Public Procurement OnLine, used in UK and EU public sector). PEPPOL is particularly relevant to UK public sector: NHS and central government have adopted PEPPOL for electronic invoicing, supporting the prompt-payment regime. Suppliers selling at volume into UK public sector should be EDI-capable; many large frameworks specify EDI ordering and invoicing as a default. Implementation typically involves either direct EDI integration (your ERP system exchanges messages with the buyer's system over secure connectivity) or use of an EDI service provider (a third-party intermediary translates between your business systems and the buyer's). The cost varies with implementation depth: a basic PEPPOL invoicing capability is achievable through service providers for a few hundred pounds per month; deep ERP-to-ERP integration costs tens of thousands of pounds in setup plus ongoing operational cost.
Common questions
Is EDI required for public sector supply?
Increasingly required for high-volume routine purchasing into NHS, local government, and central government. Many large frameworks specify EDI ordering and invoicing as a default. For low-volume or occasional supply, manual processing may still be acceptable.
What is PEPPOL?
Pan-European Public Procurement OnLine, an open network for electronic procurement documents using standardised XML messages. UK public sector has adopted PEPPOL for electronic invoicing as part of the prompt-payment regime. PEPPOL is widely used across EU and UK public sector and supports cross-border procurement.
Can I use an EDI service provider rather than direct integration?
Yes, and most SMEs do. A service provider translates between your business systems and the buyer's EDI requirements without you needing direct technical integration. Costs are typically a few hundred pounds per month plus per-document charges; substantially cheaper than building direct EDI integration for low-to-medium volume.