DE-R-027
If both supplier and customer are located in Germany, "Seller contact telephone number" (BT-42) should contain a valid telephone number. A valid telephone should consist of 3 digits minimum.
warning: reported, still valid
Peppol documentation ↗
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
Context
(/ubl-invoice:Invoice/cac:AccountingSupplierParty/cac:Party/cac:Contact | /ubl-creditnote:CreditNote/cac:AccountingSupplierParty/cac:Party/cac:Contact)[$supplierCountryIsDE and $customerCountryIsDE]Test
matches(normalize-space(cbc:Telephone), $XR-TELEPHONE-REGEX)Checked with Peppol BIS Billing 3.0 Invoice, Peppol BIS Billing 3.0 Credit Note