China (GTS): Invoice ExtensionConfigure the Invoice Extension for your China documents.Invoice Extension A group containing VRBL extensions on the document level. Element metadata PathCardinalityUsageInvoice/UBLExtensions/UBLExtension/ExtensionContent/InvoiceExtension1..1MUpdated 2 days ago China (GTS): Invoice Document Reference IDChina (GTS): Invoice Subtype CodeDid this page help you?YesNoInvoice ExtensionElement metadata