The bosch dishwashers shouldn't make any kind of beeping other than a cycle done beeping. They don't indicate errors this way or anything. I would start by killing the breaker for 5+ mins and report back if it is still doing it
Could just be a software glitch
What is a breaker?
The breaker box in your house
Usually garage or laundry room
Should HOPEFULLY be labelled and say dishwasher