MISSINGCASE

Message        Was the 'case' keyword omitted  Within a switch
               statement, "<label>" defines an unreferenced label
               that matches an enumeration constant.

Description    This user label has been defined, but there are no
               references to it.  As the label is defined inside a
               switch statement, and the label name matches an
               enumumeration constant name, there is a chance you
               intended this to be a case label.

User Action    Remove the label or add the 'case' keyword before it.