PowerDesigner provides default model checks to verify the validity of groups.
| 
                             Check  | 
                        
                             Description and Correction  | 
                    
|---|---|
| 
                             Group name and code uniqueness  | 
                        
                             Group 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  | 
                    
| 
                             Group code maximum length  | 
                        
                             The group code length is limited by the maximum length specified in the DBMS definition (MaxLen entry, in the category) or in the naming conventions of the model options. Manual correction: Modify the group code length to meet this requirement Automatic correction: Truncates the group code length to the maximum length specified in the DBMS definition  | 
                    
| 
                             Existence of user  | 
                        
                             A group is created to factorize privilege and permission granting to users. A group without user members is useless. Manual correction: Add users to group or delete group Automatic correction: Deletes unassigned group  | 
                    
| 
                             Group password empty  | 
                        
                             Groups must have a password to be able to connect to the database (for those DBMS that support passwords for groups.) Manual correction: Define a password for the group Automatic correction: None  |