e-invoicing SAP PI SAP PO XML Electronic Invoice Spain Universal Business Language (UBL) MTD HMRC EDI Converter B2G Electronic Invoice Netherlands INVOIC NetSuite SAP FI SAP MM SAP SD Electronic Invoice Norway Partner Onboarding VDA FACe API Integration Managed EDI API e-invoice Belgium Business Continuity Management Seeburger PI Adapter Lieferkette e-Rechnung X.400 SAP S/4HANA IDocs EDI Migration Fully Managed EDI ANSI ASC X12 Web EDI Automotive Industry Cross Industry Invoice (CII) Electronic Invoice Turkey Electronic Invoice Germany Electronic Invoice Hungary Public Administration S/4HANA Covid-19 Logistics Tier Supplier Peppol Value Added Network (VAN) XRechnung Electronic Data Interchange (EDI) EANCOM DESADV EDI Cooperation Models EDIFACT EDI-Standards EDIFACT EDI Optimization IDoc ERP ERP Integration EDI-Einführung EDI Connection Guide EDI Introduction SAP Supply Chain Electronic Invoice EDI Connection B2B Integration