Your question is Professional Error With Impact. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Describe a time you made a professional error that affected others. How did you deal with the consequences, and what lessons did you learn? Focus on a specific incident, your personal responsibility, and the actions you took to reduce the impact. Explain how you communicated with affected people, corrected the problem, and changed your approach afterward.