About a year ago, I posted an article on what I've learnt during my 6 months as an SGUnited trainee with DBS. It has been exactly 1 year since I left my 1-year SGUnited traineeship with DBS to embark on a new career path. And I finally have the time to sort out and list down Part 2 of everything I've learnt and experienced during the second half of my time at DBS. Because it is so long, I am breaking it down into multiple smaller parts for it to be an easier read, and adding a more detailed story to every lesson. Today's lesson is from a mistake I made a few months into the job.

1. The Story

I was a product officer in the Treasury & Market Product team at DBS. Let's call my team "Team A". Several months into the job, I was tasked to run some spreadsheet analysis on a new initiative we were thinking of launching....