The worst work mistake I ever made was preparing a deed of trust and sending it to be recorded with another bank as the beneficiary. Boy were they surprised when they found out they held a house as collateral when they didn’t make a loan on that house. They weren’t half as surprised as the bank I worked for was when they found out they made a loan on a property and had no collateral whatsoever. The mistake was fixed and I didn’t lose my job, but man I felt like a major screw up for a long, long time.It was just awful! This was back in the day when we had to type loan documents by hand, now they are computer generated.