3812514 - How does the approval limit works if the Invoice or Expense Report currency is different from the Approver's currency?

We only have Approvers set up in AUD. If an Approver does not have a delegated authority in another currency, how is it that they are able to approve invoices? Shouldn't it be a requirement for the approval to have authority in a relevant currency?

Client would like to know if on how approval limit works if the currency of the Invoice or Expense Report is different from the Approver's currency , KBA , CON-CA , Cross Applications , Problem