Syncactically required, not mapped to final format.
| Path | Cardinality | Usage |
|---|
Statement/StatementLine/BillingReference/InvoiceDocumentReference/UBLExtensions/UBLExtension/ExtensionContent/InvoiceDocumentReferenceExtension/ubl-inv:Invoice/TaxTotal/TaxSubtotal/TaxCategory/TaxScheme/ID | 1..1 | M |