Why do I see unfamiliar “System Operation” deductions in my account?

The transactions are related to the card transactions that happened earlier.

For example, when you use your card in subways, hotels, or shops, the merchants settle the actual amount with Bano at a later time.

"System Operation" happens when the settlement amounts exceed the initially authorized amounts. Similarly, "Refund" happens when the settlement amounts are less than the initial authorizations.

You can find related order of each “System Operation” or “Refund” under "Prev. Payment" on the transaction page.