What is an Accepted Solution?
Accepted Solutions is a way for you to choose the reply that best answers a question that you've posted. When you accept a solution, both the question and the solution get special icons and links that take you directly from the question to the answer.
An Accepted Solutions icon also appears on boards and in search results so you can see which messages have solutions.
You can mark a solution as accepted only for questions that you've posted (you started the thread). Community moderators can also mark one of the replies to a message as an accepted solution
How do I mark a message as a solution?
To mark a message as a solution, click Solution? on the reply.
If you change your mind or if another reply provides an even better answer, you can revoke the first selection and accept the second reply.
To revoke an accepted solution, click Options > Unmark as Accepted Solution.
You can choose another solution or leave the question unsolved.