Check for spare parts Kit to be dispatch for each Material in VA01at item

Hi Experts,

I need your valuable guidance and help in Enhancements and Modifications of VA01.

My company decides to dispatch spare Parts kit which will depend on qty of finished material to be dispatched to the dealer.

In VA01, when a person select a finished product and its order qty >1 and <20, a pop window appear to ask whether a person want to dispatch a kit or not. if yes then a list of kits(1 to 7 depends on the Sales Qty) must be appended to line item below the selected material.

Here Kit will be treated as a material.

Can anyone tell me by which User exit or BADI can I get the solution of above mention issue.

Thanks a lot in advance.

With Regards

MADAN