Invoice numbers (not to be confused with document numbers) are assigned just before each document is printed. Invoice numbers are not affected by reprinting.
The system automatically creates a document number once you complete the header. At that point, the document number appears in the title bar along with the customer’s name. You can also assign a document number manually if you prefer.
To create document numbers manually:
1. Open Direct Invoice Entry by choosing Sales Orders-->Invoices-->Direct Invoice or by entering the access code DI.
2. Click File>New Document Number from the menu.
3. Enter up to six characters to create a document number. Click OK. The document number appears in the title bar.
4. Begin entering the invoice, starting with the Customer Number.