AP invoice entry form GL code combination the system should validate Balancing segment

Hi,

In Both AP and AR On the invoice entry form – when we enter the GL code combination, the system should validate that the company segment(Balancing) value pertains to the operating unit used on the transaction.

Ie, (i)when we select UK Operating Unit it should show the related company segments in the list of values

or (ii)when we select a different company segment(eg:US company code) for UK OU it should throw a error message.

How to Handle account segment restrictions for diff OUs within the same Responsibility?

Please advice

Thanks

Lokesh