Incident Search helps relations between Sold-to Party & Configuration Item

Hi experts,

Can someone help me to know what is the best approach for the following scenario:

When I select de Sold-to Party e.g (BP 70), then when I try to use the search help for "Configuration item" it should filter only for my BP, but this is NOT happening. The result that is showing are all items of all BP's.

How can I modify the BOL Object "Product" Search help or I have to create a "Z".

Is this the correct approach?

Thanks & Kind Regards,

César Felce