Quantity Ordered Whole Number at Order Entry

Hi

Are there a way or a setup that would prevent a user to enter a number with a decimal (eg 1.5) in Quantity Ordered field (alias UORG) for each line entered P4210 Order entry ? 

Use Hold Code Min/Max would not work because it is the whole order that is evaluated, not every single line of the order. 

The products we sell are furniture as UOM EA (each). A customer can not buy 1.5 chair. 

Note:  We use the configurator and the components lines are displayed in P4210.

Thank you

Lise