Clients can buy 2 times the same listing

Hello guys,

have a look to this video: https://www.file-upload.net/download-11162985/Clientscanbuy2timesthesamelisting.moviPodundiPhone.m4v.html

@ Mark: You know the problem, we have talked about it in my last support ticket. You said, that you will implement something in the 8.9 to fix this. But i can’t find something to do this in the beta. Unfortunately you have deleted the ticket and I can no longer rely on this…

Thank you for working on this.

Regards
Martin