Material deletion flag at storage location level is not working

I have a material that is created in some plants and also in some storage locations within each plant. If I mark the deletion flag at plant level I am not able to create a PO -> Me051 error message appears. Whereas if I mark the deletion flag at storage location level nothing appens. I am able to create a PO and also to create to goods receipt. Is there any customization that I should do in order to get the error message?

Thanks in advance.