title: Sharepoint 2013 Choice column validation
body: <p>We have a choice column in a custom list, displayed as a dropdown.  Because users were liable to simply choose the first value, the default value was set to "- Select -"</p>
  
  <p>We're trying to find a way to use validation settings to let users know that if the default value is chosen, it is not a valid choice.  </p>
  
  <p>I have found an article that suggests that a choice column cannot have validation applied. Is that true? </p>
  
  <p>If validation is possible, does anyone have suggestions on the correct syntax to use? We've tried =IF([Category]="- Select -",FALSE,TRUE) but that does not display any user message.</p>
  
  <p>And after applying this formula it is not allowing to create a list item if category is not changed.</p>
  
  <p>Can any one help me out.</p>
  
  <p>Thanks in advance.</p>