Duplicate invoice

Hello,

I’ve noticed that the Manager software is accepting more than one invoice with the same invoice number, if you are entering the invoice number manually as what i do.

Can that be fixed by at least giving you a warning when you enter duplicate invoice number?

to avoid this issue Manager has the automatic numbering feature which does not produce duplicates.
manual numbering requires manual check.

Hopefully in the near future that will be added in the new updates