Is the currency exchange process, which involves depositing the amount into your bank account and then sending a message to the beneficiary to receive the agreed-upon amount from your agent in another country, considered usury (riba), especially with the possibility of a delay in sending the trust notification and a delay in the beneficiary receiving the amount? What is its expiation, and what is the permissible way to complete this process?

It is a condition for currency exchange that possession be taken in the contract session, and it is not permissible to buy one currency with another except hand to hand, because currencies have the same rulings as gold and silver.

The method mentioned does not achieve immediate possession, neither in reality nor constructively, which leads to riba al-nasi'ah (usury of delay).

The way out of this is to appoint someone to exchange on your behalf, whereby the other party goes and gives the money to your agent, who then deposits it into your account. Alternatively, your agent meets the other party at the bank, and when the money is deposited into your account, your agent gives them the equivalent amount in the other currency.

The initial exchange agreement is not binding. The exchange is conducted at the agreed-upon rate when both amounts of money are present.