E-invoice channels — KSeF (Krajowy System e-Faktur) in Poland
Every Corp-Merch invoice in Poland is born electronic, validated against KSeF (Krajowy System e-Faktur) schemas, and ingested by your ERP — zero re-keying, full audit trail.
Poland — the KSeF (Krajowy System e-Faktur) channel
KSeF (Krajowy System e-Faktur) is Poland's national e-invoice system. From 2026 mandatory for all B2B invoices in PL. Invoices issued in FA(2) XML schema, structured via secure API to MF (Ministerstwo Finansów). UPO (Urzędowe Poświadczenie Odbioru) returned as confirmation receipt. Schemas validated against XSD before submission. Corp-Merch is fully certified to issue invoices on KSeF (Krajowy System e-Faktur); signed XML stored 10 years per local archive law. Our invoice gateway issues, validates and submits in seconds; success/failure event returned to your ERP via REST callback or AS2.
Format, validation and the audit trail
Invoices issued in the country-mandated XML format (KSeF (Krajowy System e-Faktur)), signed with a qualified electronic signature (QES per eIDAS Regulation 910/2014), archived for 10 years. We store the issuance acknowledgement from KSeF (Krajowy System e-Faktur) plus the signed XML and a human-readable PDF — all three available via API. Auditors can pull the full chain for any invoice instantly.
ERP wiring — how invoices reach your AP
Three options: (1) Direct push to your KSeF (Krajowy System e-Faktur) inbox — fastest, VAT 23% recognised on issuance date. (2) PEPPOL BIS Billing 3.0 — pan-EU standard, ideal for multinationals. (3) cXML/EDI INVOIC tunnelled into your ERP for 3-way match against PO and ASN. Choose at integration time; switching channels supported under framework agreement.
Reconciliation, disputes and rejections
VAT 23% via KSeF (Krajowy System e-Faktur). Rejected invoices (mismatched VAT number, missing codice destinatario, wrong tax rate) returned by KSeF (Krajowy System e-Faktur) within 5 days; we automatically correct and re-submit. Dispute resolution within 30 days via Coupa/Ariba dispute or direct AR contact. Average dispute rate <1.5% on framework customers.
FAQ
What if my ERP cannot ingest XML?
We issue PDF + XML; PDF used for manual entry while we configure your ERP plugin (Workday, NetSuite, SAP have native plugins).
Do you support PEPPOL?
Yes — Corp-Merch is a registered PEPPOL Access Point (Sender + Receiver). Use PEPPOL ID 0088:* for any multi-country customer.
Archive duration?
10 years (EU baseline); some countries require longer (PT/IT 12 years). We archive maximum required period regardless.
Credit notes / refunds?
Same e-invoice channel (KSeF (Krajowy System e-Faktur)) with tipo TD04 (IT) or equivalent. Returned to your ERP via the same gateway as invoices.
What about non-EU customers?
UK/CH/NO customers receive PDF + XML (no KSeF (Krajowy System e-Faktur) submission). US customers receive PDF or NetSuite-native invoice.