The most important thing to remember when answering this question is that it really is not about what you did wrong. It's about how you handled a difficult situation and what you learned from it. Describe your biggest failure and discuss what you've learned from it and ideally how you've been successful because of that lesson.The real reason why interviewers ask about your biggest failure is that it reveals a lot about your ability
- to take risks - face challenges - acknowledge your mistakes and - learn from them.
Revenue should be recognized when it is realized or when it is earned. When a service is performed something is earned and revenue should be recognized.