With PhantomERP you can configure the format for your invoice number.

To configure go to Settings -> Invoice settings

• Click on Add and select a scheme format.
  Format can be XXXX or <year>-XXXX
• You can also provide a custom prefix, invoice start number, number of digits in the invoice number.
• The preview box will display the preview according to the chosen option.
• You will need to set a default invoice scheme for a business to use it.