
Peachtree automatically assigns sequential invoice numbers at the time the invoices are printed. For this reason, there is typically no need to manually enter a number into the “Invoice No.” field on the Sales/Invoicing screen. One exception is in an event where you have to manually create an invoice outside of Peachtree and need to record the transaction without printing the invoice.
To change your invoice number format:
Go to Reports & Forms > Invoices and Packing Slips…

Click Preview and Print then enter your newly-formatted invoice number into the field labeled “Number the first invoice“:

For example, let’s say Peachtree assigned invoice numbers 100, 101, 102 to our last three invoices. We want to change the format to ABC###, where “ABC001” is the next invoice number. We simply enter “ABC001” into the “Number the first invoice” field. Peachtree will now number our next three invoices with ABC001, ABC002, ABC003.
Peachtree will continue to use your format to number invoices sequentially, so unless you change your invoice number format, you will not need to manually enter a number again.
Tags: Peachtree