...
Stellarise Connector creates or updates the Xero invoice by "InvoiceNumber = 303-SI1-2000004". It will only have one invoice line, having unit price, discount, tax amount and total amount calculated as the sum of all the the InforLN invoice lines. Invoice Line Description just reports "RTF" if the InforLN Invoice "RelatedPurchaseInvoice" field is empty, the content of the InforLN Invoice "RelatedPurchaseInvoice" field if it is assigned.
InforLN Sales invoice from Sales Order
InforLN Sales invoice manual (services)
InforLN Sales invoice Ledger Code / Tax rates not mapped in Stellarise Connector
...