Dynamics 2013 finally includes the functionality to control purchase order receipts more closely by allowing you to specify minimum and maximum receiving tolerances.
Minimum Tolerance – If you receive under the minimum quantity amount, the purchase order will remain open. If you receive above the minimum quantity tolerance the purchase order line will close.
Maximum Tolerance – If you attempt to receive over the maximum quantity, you will receive an error message and will not be allowed to receive the quantity you entered.
Here’s a video that shows the setup and use of this feature: