Currency Code Change in Existing OD Order

Direct Ship Order is created  and SD (Both Customer and Base Currency is AED) is sales updated and OD (Supplier Currency is USD, Base Currency is AED) is received into Stock but not yet vocuhered. Purchase Order Currency Code defaults as USD in Detail Line of SD (P4210) Application.

With the above scenario I would like to modify the Supplier Currecny in OD from USD to AED. Appreciate your thoughst on this.

Thanks,

Abdul Basith