# PEPPOL-T76-B01601

Source: https://xmlvalid.com/rules/PEPPOL-T76-B01601

> Attribute 'schemeID' MUST be present.

- Level: error
- Rule sets: Peppol Order Response rules 3.2
- Context: `/ubl:OrderResponse/cac:SellerSupplierParty/cac:Party/cbc:EndpointID`
- Test: `@schemeID`

Validate a document against these rules: https://xmlvalid.com/validate