# PEPPOL BIS

Business Interoperability Specifications defining document rules (commonly BIS 3.0 for invoices).

## Definition

Business Interoperability Specifications defining document rules (commonly BIS 3.0 for invoices).

## Explanation

Defines validation rules, allowed code lists, and required invoice content for the network.

Used with UBL syntax for invoices and credit notes.

## Related resources

- [PEPPOL network guide](/resources/compliance/peppol-network-guide)

## Related terms

- [PEPPOL](/resources/glossary/peppol): A network and specifications for exchanging e-procurement documents, including e-invoices.
- [UBL](/resources/glossary/ubl): Universal Business Language: an XML library for standard business documents.
- [Validation](/resources/glossary/validation): Process of checking an e-invoice against syntax rules and business rules.