cks.eINVOICE reads invoice data directly from SAP Business One and converts it into the format required for structured e-invoicing: UBL 2.1 under Peppol's BIS Billing 3.0 standard, which itself builds on the EU-wide EN 16931 invoice standard with a few extra required fields, such as a buyer reference number.
September 2027 may sound like the big deadline for French SAP Business One users. Although, for large businesses, e-invoicing compliance has already started, SMEs should start preparing now for what comes next.