Browntape provides you the option to generate customized invoice numbers. You could define the start of the series and all the orders fetched henceforth would have have a invoice number auto-assigned.
Please follow the steps below to allocate Invoice numbers:
Go to the 'Account' section in the top right corner of the panel.
Click on the 'Order Invoice' section on the accounts page. The following window opens:
Here you may edit the text you wish to be displayed on your invoice.
Select the 'Enable Invoice Generation' option to provide Browntape your Invoice series. Invoice Prefix could be a alphabet/number or both (var-char input type) Whereas, Invoice start Index could only be a number.
This would help you generate invoice numbers for orders which would be fetched on Browntape hereon. If you wish to allocate the numbers to orders which have already been aggregated or fetched, select the second option also and choose a date range.
Click on Update to save the details you have selected and see your invoice numbers being allocated.