The RAISE statement raises an exception. 
  
 
  General Formats
 
     
     
 
  Syntax Rules
 
      
    - Identifier-1 must be an object reference of class System.Exception or a subclass of System.Exception. 
    
General Rules
 
      
    - If identifier-1 is specified, it is raised as an exception. 
    
- If identifier-1 is not specified, the current exception is re-raised.