After you have received the returned product, you should send the confirmation to the customer that the product is accepted back. Such confirmations are called PrestaShop credit slips.

Hi @gero
This is not a default feature of QloApps. So we cannot do it by configuring the backend of the system.
The requirement can be achieved by customizing the system.
So please raise a ticket so that we can discuss it through.
https://webkul.uvdesk.com/en/customer/create-ticket/