Check your invoice before sending it to KSeF
Drop in your invoice XML file and we'll show you what to fix. We check that the invoice meets the official Ministry of Finance requirements and that the amounts and NBP exchange rate are right.
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Drop XML files here
Accepted: .xml (KSeF FA3 invoices)
Most common errors
Where these messages come from and how to fix them.
- Attribute not allowed in FA(3) invoice XML
- Space or comma in an FA(3) invoice amount
- Foreign-currency invoice without VAT in PLN
- Invalid bank account number on an FA(3) invoice
- Invalid field value in an FA(3) invoice
- Invalid VAT rate in P_12: allowed values
- XML is not well-formed: how to fix the invoice
- Missing JST and GV in Podmiot2: what to enter
- Missing P_15: total amount due in FA(3)
- Missing required field in FA(3) invoice XML
- Reverse charge: P_18 doesn't match the VAT rate
- Element in the wrong place in FA(3) invoice XML
- VAT calculation error: P_14 or P_15 is wrong
- Wrong namespace in the invoice: xmlns for FA(3)