PowerDesigner provides default model checks to verify the validity of dimension hierarchies.
| 
                             Check  | 
                        
                             Description and Correction  | 
                    
|---|---|
| 
                             Dimension hierarchy name and code uniqueness  | 
                        
                             Dimension hierarchy names and codes must be unique in the model. Manual correction: Modify the duplicate name/code Automatic correction: Appends a number to the duplicate name/code  | 
                    
| 
                             Existence of attribute  | 
                        
                             A dimension hierarchy must have at least one attribute. Manual correction: Add an attribute to the hierarchy from the Attributes tab of the hierarchy property sheet Automatic correction: None  |