the invoice number is now the ID a number itself can be better. for example, "year - prefix - sequential number" = "2015 - RE-30001". You should reset the serial number. So in the new year the number again at 1.
Thanks a lot for suggestion. I'm sure there already was a work item for this task but I cannot find it. That's why I've just created a new one (here).
Hi Andrei,
Thank you. This should be available in the version 3.60. Tax Office in Germany accepts only account if you request with 1 in the new year. The shop must be operators able to provide even a block of numbers. Number range for ordering, order confirmation, delivery note, invoice, etc.
The invoice number is the same again with the ID. However, the invoice number should always start at 1 at the beginning of the year.
Each store owner has its own requirements for order number. Somebody resets its number, somebody adds some prefixes, somebody is fine with just a number. So right now you can easily put any logic in the "GenerateOrderCustomNumber" method of \Nop.Services\Orders\CustomNumberFormatter.cs
P.S. You can specify its format (quite simple now) in admin area.