How to update a duty slip after an invoice has been generated

To edit duty slip information after an invoice has been saved, you will first need to remove the booking from the invoice.

Go to Operations - Billing - Click on an invoice - click on EDIT - click on the small gear icon next to the booking id - select Remove Booking - click on Save Invoice

An empty invoice has been created which can be reused to add the same booking after making the required changes or a new booking.

The duty you have removed will be visible in the Duties - Completed section

Go to Duties- Completed - click on the small gear icon next to the duty listing then Edit Duty Slip to make changes in the duty slip - make the required changes then click on Update & view duty slip

You can now either generate a new invoice for the duty or go to Operations - Billing - Click on Add Invoice - Select the customer then add the booking back to the invoice