Nominal/accounting codes are automatically imported from Xero, Sage or QuickBooks. Defaults can be set for vehicle invoices, non-vehicle invoices, and reservation invoices. Further defaults can be set for individual products, contacts and invoices, and nominal/accounting codes can be edited for individual items when creating invoices. The same applies separately to purchase invoices.
If your nominal/accounting codes have been updated in the accounting software simply go to the Business -> Connect Services -> Accounting section and select Edit Settings to import your latest codes.