I just started getting this error with overwatch too on some of my child and toddler sims in the town (not my active family), I did change the teenager lifespan from 20 to 15 days, but does this mean though that overwatch has fixed it or are those sims stuck as toddlers and children?

bonnielmorrison - Hi there. It's generally not considered a good idea to adjust age ranges on a game that is already in progress, or at least to not allow sims to get stranded in what becomes the "wrong" age group while doing so. Some of them might then suddenly have a negative number of days left before their scheduled birthday, which classifies them as overdue or age stuck.

But in this case, unless you also changed other age ranges, I don't think it should be affecting sims younger than teens. I would try to use MC to trigger an Age Transition, it's under Sim > Intermediate, on these sims to see what happens. Sometimes sims become age stuck because of faulty wardrobes, in which case changing all of their outfits to non-CC temporarily (they're going to get all new clothes after aging up anyway) might be worth trying.

thanks, good advice, in this case it was only with non active families I was getting an alert, I wound up saving my active family to the Sim Bin and moving them to another world anyway because of other issues