Some formats and countries have specific requirements that may vary.

VRBL

The following table shows the Document-level elements for VRBL:

Topic	Description
Invoice	The Invoice object is the highest level object in a Document.
General Invoice Information
CustomizationID	The Specification ID is used for routing.
ProfileID	You must specify the same Profile ID for all Documents.
ID	You can specify a number for your Document, such as an invoice number.
IssueDate	You can specify the date the Document is issued.
DueDate	You can add the date payment is due to your Documents.
InvoiceTypeCode	Documents can be of one of various invoice types that you need to specify.
InvoiceNote	You can add a textual reference or note to your Documents.
TaxPointDate	You can add Tax Point date to your Documents.
DocumentCurrencyCode	You can specify a currency for your Document.
TaxCurrencyCode	You can add a Tax Accounting currency.
AccountingCost	You can model references to a Buyer's accounts.
BuyerReference	You can add a buyer reference for internal routing.
InvoicePeriod	You can specify a period during which the invoice is valid or active.
IssueTime	The time, assigned by the sender, at which this document was issued.
UUID	A universally unique identifier for an instance of this document.
Document References
OrderReference	You may want to add a reference to an additional document.
BillingReference	You can specify a reference to a billing related document.
DespatchDocumentReference	You can reference a dispatch advice in your Document.
ReceiptDocumentReference	You can reference a receipt advice in your Documents.
OriginatorDocumentReference	You can model a reference to a lot or tender.
ContractDocumentReference	You can add a reference to a purchasing contract in your Documents.
AdditionalDocumentReference
ProjectReference	You can add a reference to a project to your Document.
Parties
AccountingSupplierParty	You can model information about suppliers.
AccountingCustomerParty	You can model buyer information.
PayeeParty	You may want to model a Payee when this party is different to the Supplier.
TaxRepresentativeParty	You can model the Supplier's Tax Representative at the Document level.
Delivery
Delivery	You can add information about deliveries to your Documents.
DeliveryTerms	A set of delivery terms associated with this document.
CarrierParty	Used to model details about the carrier of a delivery,
Payment
PaymentMeans	You can add the means of payment to your Document.
PaymentTerms	You can information about payment terms.
PrepaidPayments	Prepaid payments are usually made before the goods are purchased.
Document-Level Allowances and Charges
AllowanceCharge	You can model an Allowance or Charge at the Document level.
Document-Level Taxes
TaxTotal	You can model tax information at the Document level.
TaxExchangeRate	The exchange rate between the document currency and the tax currency.
WithholdingTaxTotal	The total withholding tax.
Document-Level Totals
LegalMonetaryTotal	You must add information about totals.

EN 16931

The following table shows the Document-level elements for EN 16931:

Topic	Description
EN 16931: Payment Due Date	You can specify a Payment Due Date for your Documents.
EN 16931: Invoice Type Codes	You must use the required Invoice Type Codes for EN-16931.
EN 16931: Invoice Notes	You can add additional context to your notes.
EN 16931: Invoicing Period	You can use a code to represent the type of Tax Point Date, such as delivery date.
EN 16931: Attachments	You must use one of the permitted values for the `mimecode` attribute.
EN 16931: Additional Supporting Documents	You can add the type of document to your references to supporting documents.
EN 16931: Party Scheme IDs	You can add information about the scheme that a party's ID belongs to.
EN 16931: Party Tax Registration IDs	You can add a country code prefix to a party's Tax ID.
EN 16931: Supplier Information	You must include specific information about Suppliers.
EN 16931: Payment Means	You must use a value from the UNTDID 4461 list for the payment means.
EN 16931: Document-Level Allowances	EN-16931 has certain requirements for Document-level allowances.
EN 16931: Document-Level Charges	EN-16931 has certain requirements for Document-level charges.
EN 16931: Document-Level Taxes in Document Currency	EN-16931 requires specific information for tax information at the Document-level.
EN 16931: Document-Level Taxes in Accounting Currency	You must specify the Tax Category for document-level taxes in the accounting currency.
EN 16931: Document Totals	If the Amount Due for Payment is positive, the you provide the due date or the payment terms.