With RepairDesk, you have the flexibility to personalize the ID number for each invoice.

To modify the ID number of a specific invoice, navigate to the Manage Invoice section. From there, select the desired invoice by clicking on the Action button and choosing Edit.

At the top of the invoice, adjacent to the Invoice Number, you'll find a pencil-shaped icon. Simply click on this pencil icon and input the new invoice number in the provided field.

Lastly, don't forget to click Save to apply the changes.