If you have added the wrong receipt to a payment, don't panic.
First, you need to add the right receipt to be able to delete the previous one.
Here's how to replace a receipt:
Delete a receipt on a Payment
Go to the "Payments" tab.
Select your payment or your colleague's.
Click on "Upload another receipt" or drag-and-drop the receipt on the right sidebar.
Click on the incorrect receipt.
Click on the "trash can" tool at the top left of the pop-up window that appears with your receipt.
It looks like this (see top-left corner):
➡️ It's not possible to delete a receipt if you don't add another receipt first.
➡️ It's not possible to delete a receipt if the payment has been exported.