Knowledge Hub
Insights, guides and case studies
215 articles on EDI, eInvoicing and supply chain automation, from what the mandates actually require to how other businesses made the move.
215 articles · page 1 of 18
- EDIOctober 2026What is a SKU (stock keeping unit)? A guide for UK suppliersWhere a supplier's own code, the buyer's item number and the GTIN each sit on an EANCOM order, despatch advice and invoice line, what NHS Supply Chain and Ocado ask suppliers to quote, and five checks that keep the three codes in step.
- EDIOctober 2026What is Web EDI? A guide for UK suppliersHow web EDI turns browser forms into data a customer's system can use, how NHS Supply Chain, HMRC and Transport for London send orders to suppliers and take their invoices, the signs a supplier has outgrown keying by hand, and what the 2029 eInvoicing roadmap does and does not settle.
- EDIOctober 2026What is OTIF (on time in full)? A guide for UK suppliersEvery buyer writes its own OTIF rules. How Travis Perkins, Wickes, M&S and Ocado score delivery, why NHS Supply Chain names OTIF but leaves the measure to its framework agreement, the three ways to count in full, and the despatch data behind the score.
- EDIOctober 2026What is an invoice number? Invoice numbers explained for UK suppliersSince 2007, every full UK VAT invoice has needed a number from a sequence. HMRC's numbering rules, how to handle gaps and copies, and where the number sits in EDI and Peppol messages.
- EDIOctober 2026What is a debit note? Debit notes explained for UK suppliersRaised a price after invoicing, or had a claim from a customer? What a UK debit note must show, when HMRC's 14-day clock starts, and how debit notes travel by EDI and Peppol.
- EDIOctober 2026What is a purchase order (PO)? A guide for UK suppliersRead from the receiving end: what a customer's order tells you, who owns the PO number, how to accept it, propose changes or decline it, and what your ASN and invoice have to match.
- eInvoicingOctober 2026What is self-billing? Self-billed invoices explained for UK suppliersWhen a customer asks you to sign a self-billing agreement, it writes your VAT invoices from then on. What you sign, what each self-bill must show and when your VAT falls due.
- EDIOctober 2026What is a GTIN (Global Trade Item Number)? A guide for UK suppliersThe number inside a retail barcode, read from a UK supplier's side: who allocates it, which one goes on the outer case, when a pack change needs a new one, and where it sits in EDI orders.
- EDIOctober 2026EDI invoice explained: what it contains, how it is matched and why invoices failThe bill your system sends a retailer, segment by segment. Follow a GS1 example line by line, then see which records it is checked against before payment.
- EDIOctober 2026EDI mapping explained: what it is, how it works and who should own the mapsField-level rules link your ERP to each trading partner's message guide. Follow a GS1 purchase order mapped line by line, and see who should update the maps when a retailer changes its rules.
- NewsOctober 2026Deposit return scheme for drinks producers: what to do before October 2027A dated plan for brand owners, importers and wholesalers: who runs the scheme, which containers carry the 20p charge, what registration and the barcode change involve, and what to do first.
- EDIOctober 2026What is an SSCC? The pallet label code UK retailers ask forWhat a Serial Shipping Container Code is, how its 18 digits and check digit work, what goes on a GS1 pallet label and where it sits, how UK suppliers get SSCCs through GS1 UK, and how the code links each pallet to the despatch advice at goods-in.
