Edit: @Mansi_G pointed out that this idea already is possible.
"The original poster of the topic can change the solution at anytime by going to Options and mark a already Accpeted Solution as "Not a solution" and then mark another post as an Accepted Solution."
This is related to the forum. I really think there should be a way to change the accepted solutions.
Having it locked in place on makes sense for things that are concrete and easy to know you've got a solution to. (Eg. My phone no longer works and now it does) BUT in many cases the solution isn't so concrete and new information might come up. Maybe someone's first response seemed logical and it gets accepted but someone else actually knows more and has a better solution.
As the forum seems to be intended as an archive to help people when they run into trouble it would be good to have the ability to correct.