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Subiekt GT / Nexo
Używasz Subiekt GT lub Nexo? Waliduj faktury dla KSeF. Sprawdź NIP i numerację przed wysyłką.
Visit Subiekt GT / NexoSupported E-Invoice Formats
| Format | Support Level |
|---|---|
| KSeF FA(2) | Native Support |
| JPK_FA | Native Support |
Common Validation Errors
These errors are frequently encountered when validating e-invoices from Subiekt GT / Nexo. Click on any error to see the fix.
KSEF-001Very CommonNIP validation failed
Retail-focused users may have many B2C customers without proper NIP. B2B requires valid NIP.
KSEF-003CommonInvoice number sequence gap
Multiple POS stations may create numbering conflicts. Configure unique prefixes per station.
KSEF-006OccasionalUnit code not recognized
Unit codes must be from Polish classification list (szt., kg, m, etc.).
About Subiekt GT / Nexo
Subiekt GT i Nexo to popularne polskie programy do fakturowania i handlu. Moduł KSeF dostępny.
Validate Your Invoice
Export your invoice from Subiekt GT / Nexo and validate it against Peppol and EN16931 rules.
Validate FreeHow to Validate
- 1Export your invoice as UBL or XML from Subiekt GT / Nexo
- 2Upload the file to our validator
- 3Review errors and warnings with suggested fixes
- 4Fix issues in Subiekt GT / Nexo and re-export