How to block an order if the price is too low?

Hello,

My problem is :

How to block an order if the price is too low?

I created a new type of condition ZMIN and an access by material.

When the net price is below the minimum price the system must position the order on incomplete document for error of price.

Thank you in advance.

Frédéric Blaise

e-Kenz S.A.