immediate confirmation
noun phraseUK /ɪˈmiːdiət ˌkɒnfəˈmeɪʃən/
US /ɪˈmiːdiət ˌkɑːnfərˈmeɪʃən/
A quick message that tells you right away that something is true or done.
After I sent my order, I got immediate confirmation that it was received.
OTHER MEANINGS
2. A signal sent at once to show that a message or action was received.
The app sends immediate confirmation when your payment goes through.
3. A fast official statement that something is definitely true.
The school gave immediate confirmation that classes were canceled.
4. A real-time reply that a booking or request has been accepted.
We received immediate confirmation of our hotel reservation.