Guides
Plain explanations of the formats of electronic invoices, and what to check when you convert one.
UBL, CII and Factur-X: what is the difference?
Three names, one invoice: what each one is, where you meet it, and what a converter does.
Read the guideConverting an invoice between CII and UBL: what to check
A checklist to compare an invoice with its conversion: totals, lines, parties, payment, references.
Read the guide