The Submit My Invoice module is a separate feature. To enable it, please ask your Account Owner to get in touch with your dedicated Customer Success Manager at Spendesk.
You can delete your invoice unless it's not marked as paid. Otherwise, you won't be able to.
Go to the Requests tab.
Tick the invoice in question.
Click on the Cancel button at the top of the page.
👉 Please note that it's not possible to delete an invoice marked as paid.
In this case, simply delete the invoice line on your accounting system if you didn't mean to mark it as paid or if there's a mistake. In the second case, re-submit the invoice through the usual flow.
💥 Bookkeep 2.0 :
Warning, on Bookkeep 2.0, if the invoice has been approved in Invoices - Verify, it is no longer possible to cancel it in Requests. You will then have to mark it as paid and delete it from the .csv file before importing it into your accounting software.