The idempotent way is definitely better, but I argue/add that it would be better to have the incoming business requirement phrased appropriately such that the i

The idempotent way is definitely better, but I argue/add that it would be better to have the incoming business requirement phrased appropriately such that the idempotent approach is the first one that comes to mind. I am not sure how to perform that rewording/transformation in general though or even for the examples above.