The cashier checks the bill's solvency. However, it does not do this in accordance with the agreement accepted by the banks. It's easier not to take the bill and come up with a reason. Another exchanger, another bank accepted it without any problems. Although the bank is also included in this agreement.
Today, 02/26/2024 at 12.00 I went to the exchanger, it is closed, I look, a technical break is indicated from 12.00 to 12.15. I stand waiting for 15 minutes, but after the time has elapsed, it has not opened. I had to call the call center.... they said the exchanger is not working today for technical reasons. Here's the question - it was difficult to make some kind of notification (for example, to hang a sign). I stood empty and spent 15 minutes of my lunch break.
We were standing in line and they just put a technical break in front of us, despite the fact that the queue was large. You need to warn about this in advance. We were in a hurry and wasted our time.