There are some great new features on the road map for Electronic Reporting in terms of customer invoicing. https://docs.microsoft.com/en-us/business-applications-release-notes/April19/dynamics365-finance-operations/additional-configurable-invoice-layouts These additional reports all use excel layouts. Distribution invoices as Excel files doesn't meeting our customers expectations. Users want to be able to use the ER email distribution functionality but only send files of type PDF to external parties such as customers. I have recently tested the new 'generate documents in PDF format by filling in PDF template' and the functionality seems very cumbersome without a default PDF template and configuration provided. Other work-a-rounds are also possible of course but ideally, a new exporting method will be introduced; one which allows users to print filled in Word and Excel templates in a PDF output file / format.