Intercompany Billing currency issue

Hi Experts,

I have created the inter company credit memo based on customer credit memo through Standard SAP report RVIVAUFT, Customer Credit memo G2 has the currency of GBP and the Inter company Credit memo is  in EUR. its picking up from the customer master of inter company credit memo. but business requested it should be GBP document currency of Customer Credit Memo(G2).

what configuration or settings needs to do for picking up the document currency in inter company credit memo.

Thanks and Best Regards,