What is a good way to write to tell your colleague to move on from past mistakes and focus on the bigger issue on hand?
closed as primarily opinion-based by user140086, Andrew Leach♦ Dec 10 '15 at 7:30
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I refer to the miscalculation in respect of the cash-flow analysis on the new Milan Project. We appreciate the work you and your team did to help identify these very subtle errors, and for our part, the finance team has worked hard to make the necessary corrections.
We are now confident that the project timeline is completely back on track, and the client group is very satisfied with progress to date. I trust that you and your team now share our confidence, and while the error has been acknowledged and addressed, it need not delay or distract us any further.
I'm sure you'll agree that we need to look firmly forward and keep our perspective focused on the main goals of the Milan Project.