One of the key aspects of Scrum that makes teams perform better is organising the flow of work. The backlog of a team is its only source, and because it’s prioritised the team is guaranteed to always deliver valuable features. So much for theory. In reality a team has to deal with a lot of distractions that make it hard to focus on delivering the sprint goal: issues, outage, bugs, changing requirements; stuff that “absolutely cannot wait”.
Indeed, defects need to be dealt with. As a Scrum Team you face the daunting task of making sense of it all to come to a decision how to deal with a request. Luckily there are some guidelines to help you make a decision how to deal with these things.