When you delete an attribute, model options determine whether or not the corresponding data items are also deleted:
| 
                             Model options selected  | 
                        
                             Result of deleting an attribute  | 
                    
|---|---|
| 
                             Unique Code and Allow Reuse  | 
                        
                             Does not delete corresponding data item  | 
                    
| 
                             Unique Code only  | 
                        
                             Does not delete corresponding data item  | 
                    
| 
                             Allow Reuse only  | 
                        
                             Deletes corresponding data item if it is not used by another entity  | 
                    
| 
                             None  | 
                        
                             Deletes corresponding data item  |