PowerDesigner provides default model checks to verify the validity of package types.
| 
                             Check  | 
                        
                             Description and Correction  | 
                    
|---|---|
| 
                             Package type name and code uniqueness  | 
                        
                             Package type names and codes must be unique in the database package. Manual correction: Modify the duplicate name/code Automatic correction: Appends a number to the duplicate name/code  | 
                    
| 
                             Package type definition empty  | 
                        
                             A package type must have a definition. Manual correction: Create the type definition in the Definition tab of the package type property sheet Automatic correction: None  |