# Rule sets

> The schematron rule sets Peppol Validator runs, with the pinned version and every rule. See https://peppolvalidator.com/schemas for which rule sets run on which schema.

- [EN 16931 (UBL)](https://peppolvalidator.com/rules/sets/en16931-ubl): CEN/TC 434, version 1.3.16, 979 rules (281 fatal, 698 warning)
- [EN 16931 (CII)](https://peppolvalidator.com/rules/sets/en16931-cii): CEN/TC 434, version 1.3.16, 806 rules (335 fatal, 471 warning)
- [Peppol BIS Billing 3.0](https://peppolvalidator.com/rules/sets/peppol-bis-billing-3): OpenPeppol, version 3.0.20, 159 rules (135 fatal, 24 warning)
- [KoSIT XRechnung 3.0 rules (UBL)](https://peppolvalidator.com/rules/sets/xrechnung-3-ubl): KoSIT, version 3.0.2 (schematron 2.6.0), 77 rules (66 fatal, 10 warning, 1 information)
- [KoSIT XRechnung 3.0 rules (CII)](https://peppolvalidator.com/rules/sets/xrechnung-3-cii): KoSIT, version 3.0.2 (schematron 2.6.0), 74 rules (61 fatal, 12 warning, 1 information)