[SI-V11-INV-R000]-This is NOT a UBL 2.x document, validation cannot continue [SI-V11-INV-R001]-Each invoice MUST be specified as a UBL 2.1 document [SI-V11-INV-R002]-Each invoice MUST have an InvoiceTypeCode declaration [SI-V11-INV-R003]-A CompanyID MUST be specified using a PEPPOL Party identifier [SI-V11-INV-R004]-An external reference MUST have its uri specified [SI-V11-INV-R005]-A country MUST be identified by a two-letter identification code as specified in ISO3166-1:Alpha2 [SI-V11-INV-R006]-A tax scheme MUST have an identifier specifying it uses the UN/ECE 5153 list [SI-V11-INV-R007]-A legal entity MUST have a company identifier [SI-V11-INV-R008]-If delivery terms are specified they MUST be expressed as special conditions [SI-V11-INV-R009]-A primary account number MUST be specified if a card account is used [SI-V11-INV-R010]-A network id MUST be specified if a card account is used [SI-V11-INV-R011]-A financial account MUST have an id [SI-V11-INV-R012]-A financial account id MUST have a value [SI-V11-INV-R013]-A financial institution MUST have an id [SI-V11-INV-R014]-A financial institution id MUST have a value [SI-V11-INV-R015]-A tax category MUST have an id [SI-V11-INV-R016]-The VAT category percentage MUST be provided if the VAT category code is standard. [SI-V11-INV-R017]-A mathematic operator MUST be specified as a code specifying whether the calculation rate is a multiplier or divisor [SI-V11-INV-R018]-An allowance total MUST be specified when allowances are applicable [SI-V11-INV-R019]-A charge total MUST be specified when charges are applicable [SI-V11-INV-R020]-An item on an invoiceline MUST have a name [SI-V11-INV-R021]-A country identification code MUST have a list identifier attribute 'ISO3166-1:Alpha2' [SI-V11-INV-R022]-An additional item property MUST have a name and a value [SI-V11-INV-R023]-An invoiceline MUST have a price section [SI-V11-INV-R024]-If payee information is provided then the payee name MUST be specified. [SI-V11-INV-R025]-Transaction currency tax amounts MUST be in the local currency and equal to the tax currency defined on the header level [SI-V11-INV-R026]-Currency Identifier MUST be stated in the currency as defined on header level [SI-V11-INV-R027]-If the VAT total amount in an invoice exists then each invoice line item MUST have a VAT category ID. [SI-V11-INV-R028]-An allowance percentage MUST NOT be negative. [SI-V11-INV-R029]-In allowances, both or none of numeric factor and base amount SHOULD be provided