Business Area validation for particular Company Code

Hello experts,

I am dealing with following task: it is required to prepare validation or BTE to check whether selected business area belongs to the specified company code. Basically, we have several company codes, and for each several business areas can be used, like this:

Could you point me to the right direction? I was trying with simple validation (under GGB0), but I am not sure what is the scope of business area (where it can be used in the whole SAP system). Also, find out BTE, but don't know that this is the best solution.

Thanks in advance