PL-R-005
Error Guide
🇵🇱 PL-R-005: Invalid Polish NIP format in Poland
ErrorMandatoryNeeds Input
Polish NIP must be 10 digits with valid checksum.
Quick Facts
Severity
Error (rejection)
Ruleset
ubl-2.1
Mandate
B2B Mandatory
Fix Type
Needs input
Why This Matters in Poland
Poland requires e-invoicing using KSeF XML format. Invoices with this error will be rejected. They cannot be processed for Poland compliance.
Invoice Navigator covers 134 KSeF FA(2) rules for Poland. Auto-remediates 78% of top rejection errors.
How to Fix PL-R-005
- 1Check lengthMust be exactly 10 digits
- 2Verify checksumMOD 11 validation
Poland E-Invoicing Requirements
Phase
Status
Scope
KSeF voluntary
Live (Jan 2022)
All VAT payers (opt-in)
B2B mandatory
Live (Feb 2026)
All Polish VAT payers
B2G
Live (Feb 2026)
Included in general KSeF mandate
Common Causes
- •Wrong length
- •Invalid checksum
- •Using old format
Fix PL-R-005 automatically
Upload your invoice and let Invoice Navigator auto-remediate this error.