How to extend existing customer to a another Company code with a different account group.

Hi,

We have a customer created for Company code 1000 in the Customer Account Group 'Internal Companies'.

We want to extend the customer to Company code 1010. But from 1010 company's point of view, this should be in the Customer Account group 'Related parties'

Is this classification possible in SAP FI?

If possible, then how this could be achieved? Please help.

Thanks in advance.

Ramzy