Shortage alerts for Production Orders

I am finding out that Axapta lets you finish and cost a production order without any error messages when there are shortages of materials. It just does not create any inventory transactions. I thought with the checkbox ‘pick negative’ UN-checked, one would be stopped at the “start” or at the “finish” moment of the order,( when the appropriate automatic BOM consumption checkbox is checked for fore- or back-flushing). But this is not the case. Is this a bug? Thanks Evert

In which version of Axapta r u working.Because normally it should not come