This question is related to the preceding one in some ways. Because the recruiter is interested in how the prospect would manage a demanding technical circumstance. It might be anything - a glitch in the code, a design flaw, etc.  They would also want to know if they would employ the best practices to tackle the difficulty with their team (s). While the responses may differ, the best approach to go would be to draw down a rough roadmap or the step-by-step procedure they would use to deal with the scenario.  Furthermore, the applicant should provide a good reiterative solution/framework to avoid that technical problem from occurring again.