PowerDesigner provides default model checks to verify the validity of table collapsings.
| 
                             Check  | 
                        
                             Description and Correction  | 
                    
|---|---|
| 
                             Table collapsing name and code uniqueness  | 
                        
                             Table collapsing 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 target table  | 
                        
                             A table collapsing must have a table as result of the collapsing. Manual correction: Delete the table collapsing object Automatic correction: None  | 
                    
| 
                             Unavailable target table  | 
                        
                             The table resulting from the collapsing should be available. Manual correction: Delete the table collapsing object Automatic correction: Deletes the table collapsing object  |