Some error messages give you the option to apply a Quick Fix solution.
When you hover over a field with a message, click the blue link to apply a solution.
In the Review sidebar, some messages show a suggest solution right in the message text. Click the blue link to apply the solution.
When hovering over a message in the Review sidebar, look for a light bulb that appears to left of the message, then click on it to see the possible solutions.
You can also right-click on the message to choose from possible solutions.