Do you use error reporting system in your software? How do you know whether those are your errors? How do you run your tests without throwing tons of errors to that system? How do you even test error reporting? My talk is about error-reporting in modern FED eco-systems. I’ll present our approach of how to scope and differentiate between errors in “multi-app” systems, and how to conduct testing conveniently and with no hacks. The story of how we solved it, I truly believe, would benefit and inspire others. Participants of this talk will be introduced to a new way of reducing the noise of their monitoring systems and understand why it is so important to have such a system in the first place.