...
If you are making significant changes to a Rule, planning a Rule or know a Rule “Will” be broken you may choose to hide the errors while you finalise your changes and prep any new Templates. At the top right-hand side of the Rule Designer screen you can see the number of errors currently present. Clicking on the icon will hide the errors. Clicking again will show them again.
When changes are made to a Rule the Errors section of the ribbon bar will show that validation is occuring. You can still make further changes and work on the rule while it’s validating but it’s useful for the user to understand if the changes made at this point have been successfully validated and that no errors exist.