Note:
1. E-invoices can be cancelled only within 24 hours of creation. This action cannot be reversed.
2. E-invoices cannot be edited once created.
3. E-invoices cannot be cancelled on cancellation of original documents in other sections.
First go to sales on the left hand side of the dashboard. After clicking on 'sales', A drop down menu appears.
Select e-Invoices from the drop down menu.
Search or select the e-Invoice you would like to cancel and click on "delete Icon" option, under actions.
A pop up will appear, with the details of the e-invoice, such as date, ID, customer, and payment details. Click on the “cancel” button from the pop up.
Congratulations, Your e-Invoice has been deleted successfully and a pop up will appear informing the same on the top of the screen.
Also, learn "How to cancel e-Invoice on Android"