E-invoicing & validators

KSeF validator

Polish KSeF checks, technical hints and limits of pre-validation.

Updated: 2026-06-10ksefpolandvalidator

The KSeF validator checks structured Polish invoice data against the KSeF rule version configured in Dynafis. It does not automatically simulate acceptance or assign an official KSeF number.

Input data

Use the original structured file or Dynafis-generated data with complete supplier, buyer, dates, lines, taxes and totals. A regular PDF alone is not a KSeF file.

Validation result

Schema and business-rule findings are shown with a field or XML path. Correct the working model and regenerate the file rather than editing exported XML without control.

Before production submission

Verify authorisation, environment, certificates or tokens and the currently required official rule version. Acceptance is confirmed only by the production KSeF interface.

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