All 220 guides
Every guide opens with a route check: the stage, the data, the validation to expect, and the first check to make. Page 9 of 11, guides 161 to 180.
Intra-EU supplies and invoice data
The data that supports an intra-EU supply treatment, and the evidence to keep with the invoice.
Language of the readable view
Which language the readable view should use, and why the structured data does not depend on it.
Multi-entity groups and invoicing
Invoicing between entities in a group, across countries, with identifiers and references kept distinct.
Routing an invoice across borders
Networks, platforms and direct routes across borders, and the capability lookup that precedes sending.
Tax identifiers across borders
Seller and buyer identifiers in different countries, and the checks that apply to each one.
Authenticity, signatures and fraud explained
Origin, integrity, seals and signatures, and the fraud patterns that structured data does and does not stop.
Authenticity checklist for a receiver
Origin, integrity, business control and payment detail check, before posting or paying.
Bank detail change fraud prevention
A second-channel verification rule for bank detail changes, applied without exception.
Business controls vs technical controls
A signature does not replace a business control, and a business control does not replace a signature.
Duplicate invoice fraud and detection
Duplicate detection by identifier, amount and reference, and the human review that follows a match.
Electronic signatures and seals on invoices
Signatures and seals as evidence, what each one proves, and what neither one proves about business approval.
Internal fraud controls for invoicing
Segregation, approval and audit trails that make internal invoice fraud harder to hide.
Invoice fraud patterns to recognise
Changed bank details, duplicate invoices, false suppliers and altered totals, recognised by their record pattern.
Origin and integrity of an invoice
How to show who issued an invoice and that it has not changed, without relying on appearance.
Responding to a suspected fraudulent invoice
Stop, preserve, verify through an independent channel, and escalate, in that order.
Supplier impersonation and verification
Verifying a new supplier through a channel independent of the invoice itself.
Archiving, audit and evidence explained
Keeping the invoice and its status evidence retrievable for audit, in the form it was issued and received.
Archive checklist for a first audit
Sample retrieval, integrity evidence, status trail and retention rule, checked before the auditor arrives.
Archive integrity and tamper evidence
How to show an archived invoice has not changed, and what evidence supports that claim.
Audit trails for invoice exchanges
A trail that shows who sent what, when, through which route, and with what status.