Maximum Quantity restriction in the sales order?

Hi All

We need to make restriction of maximum order QTY with UOM in sales order key combination of sales organization wise / site wise / distribution Channel wise

While qty is entered for an article in sales order for which maximum sales order qty is maintained in some field (Article master or any other possible field)-, system has to check if the ordered quantity is greater than maximum sales order qty then should display error message and will not allow to process further

Hope the same is clear.

Regards,

C S Javali