- NAV Online Invoice System will have stricter validation rules from September 2025.
- New business validations will impact invoicing software, accounting, and tax processes.
- Test system available from 1 September 2025 for preparation.
- Changes aim to improve data accuracy and reliability for NAV and businesses.
- Professional consultation led to modifications in the draft system.
- Three new WARN messages will be introduced.
- Three existing WARN messages will be discontinued.
- One INFO message will become a WARN message.
- Fifteen WARN messages will become ERROR messages, blocking data submission.
- ERROR messages prevent data submission until corrected.
- WARN messages indicate potential content issues but do not block submission.
- New ERROR rules include issues with performance period dates, missing XML elements, and incorrect VAT markings.
- New WARN messages include incorrect invoice line item data.
Source: grantthornton.hu
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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