Describe a time when you've made a mistake in your work and how you fixed it.

"When I was working for XYC Limited, I noticed a mis-punch in an order. After some cursory investigation, I realized the mistake was my own. But rather than burdening my supervisor with the information too early on, or diverting our resources to rectifying the matter, I made a few phone calls to our warehouse and to our billing department and corrected everything, and placed the order again. The product wouldn't get there on time, so I expedited the shipping. I then called our client and explained that the initial overcharge would pend for only a day, and would be refunded before it cleared. I explained that I already called their financial institution to ensure this and that their product would arrive earlier than expected at no extra charge. I then informed my supervisor what had happened, explained I'd resolved it, and that it took only one payroll hour to correct the issue. They were pleased with how I handled the situation."