Credit Check without Open Order Value

Hi Experts,

I have a business requirement, where it is asked to execute the credit check the delivery and billing amount and NOT considering any open order amount.

To put it in a simple word, the requirement is:

We need to consider all the amounts of Delivery + Invoices...........and if it is out of credit limit, then the Delivery will be blocked and not the Order".

I know how to make the delivery blocked. That can be done by using the 'Credit Group' as 02.

But my issue is, I am unable to find out the way, how I can only choose the Open Delivery and Invoice amount.

Both in Static and Dynamic credit, it checks all the Open Order as well.

Can I do it by un-checking "Open Order" check box? I have attached a screen shot for your ready reference.

Please suggest. This is an urgent requirement.

Thanks

Santi Bhusan