Activate the Repair Environment 
 Use the specialized commands in the repair environment to help analyze and repair model errors. 
-  To enter the repair environment from the part environment, select Repair Bodies in the Surface panel and then select the base bodies to repair. You can also right-click a base body in the browser and select Repair Bodies in the context menu. 
- To re-enter the repair environment from the part environment, double-click the repair node  in the browser. You can also right-click the repair node and select Repair Bodies in the context menu. in the browser. You can also right-click the repair node and select Repair Bodies in the context menu.
 Repair Environment Workflow 
- Enter the repair environment. 
-  Click Find Errors. 
-  Examine the browser for errors. 
-  Click Heal Errors. 
-  Set the Allowable Change tolerance value. 
-  Click Analyze Selected Bodies to preview the number of errors fixed using the current tolerance. 
Note:  Fixing multiple errors using a large tolerance can alter the model shape and cause downstream modeling operations to fail. 
- Click OK. 
- If errors remain: 
 
-  To exit the repair environment, click Finish. 
 The redefined repair body participates in modeling operations and history.