3810041 - Croatia eInvoicing: Settlement Invoice references non-existent ODN when Negative Advance Invoice not yet accepted by FINA - S/4HANA

• During end-to-end testing of the Croatia eInvoicing flow (Advance Payments, Negative Advance Invoices, and Final Settlement Invoices), inconsistent system behavior is observed in the eDocument XML / PDF output, referenced Official Document Numbers (ODN), and financial totals
• The inconsistency depends on the submission sequence of the Negative Advance Invoice relative to the Settlement Invoice
• When the Settlement Invoice is generated before the Negative Advance Invoice has been accepted by FINA, the document references an ODN that does not yet exist in FINA, resulting in rejection and tax-total discrepancies
• Submitting invalid reference ODNs or incorrect VAT/amount breakdowns to FINA leads to immediate electronic document rejection by the tax portal and legal non-compliance
• The ODN of the Negative Advance Invoice cannot be located in any FI document field; only the customer-side ODN is visible
• The Negative Advance Invoice line and the Settlement Invoice line are generated in parallel within the same billing run, and cannot practically be placed in sequence

• SAP S/4HANA
• SAP Document Reporting and Compliance service
• Document Compliance Croatia

Croatia, HR, eInvoicing, eInvoice, eDocument, eDocument Cockpit, FINA, Advance Invoice, Negative Advance Invoice, Settlement Invoice, Final Invoice, Advance Payment, ODN, Official Document Number, fiscal number, tax portal, XML, PDF, rejection, tax total discrepancy, VAT breakdown, billing block, billing plan, milestone billing, user status, BS02, VF01, VF04, status profile, SD billing, billing due list, billing run, sequence, parallel generation, FI document, legal compliance, non-compliance, S/4HANA 2025, onPrem, SAP Note 3780827, 3780827 , KBA , CA-GTF-CSC-EDO-HR , Document Compliance Croatia , Problem