The Customer free text invoice data entity is a denormalised entity for creating Accounts Receivable/Sales Ledger invoices that doesn't provide all functionality available within the UI. Within the UI, when creating an AR invoice, it's possible to select from the customer's recorded addresses which should be used as the Invoice address (to which the invoice is sent) and/or the Delivery address (to which the product/service should be provided). The data entity would be more useful if it included fields to specify the two address fields, ideally by a user-meaningful value like Name or description, but Address location Id might be sufficient for some use cases. If these fields are blank, the current functionality to use primary address could be the default position, but if populated, DMF should change the address on the invoice header