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.