Hi, when generating a Trial Balance to Parent Topco (consolidated) does anyone know why two transactions posted on the same date and in the same posting period would have slightly different exchange rates (the two transactions in question are Journal entries but we have other examples)?

And in the same subsidiary? There are 3 types of consolidated exchange rates: current, average and historical. Each account is assigned to one of these 3 general rate types.

These two transactions are in the same subsidiary but have a different currency to the parent company. So we are going from USD to GBP, the only difference I can see is that one was created before 12pm and one was crated after 12pm but that seems a weird way to decide which exchange rate to use?