He said,
"With AWS, when trying to create a new instance

'Your quota allow for 0 more running instance (s). You requested at least 1'

with regard to the problem, I want to know a method to surely solve it."

I said,
"As far as I see it has reached the limit of the number of simultaneous execution instances, what kind of solution would you like to see?"

I am worried coz he has no reply.