There should be a special badge you get to wear forever once you have been In Charge of Symbology at some point in your life.. In a previous job, after a few y

There should be a special badge you get to wear forever once you have been In Charge of Symbology at some point in your life.. In a previous job, after a few years I settled on (Type, Expiration, ISIN, Listing CCY, Listing MIC, Trading CCY, Trading MIC, Fudge) as The Tuple that could handle almost everything…. Once in a while I would still get a messed up case of non-uniqueness, that’s what the “Fudge” is for :)