Integrations (PTC products, 3rd party products and code) > 3rd party product integrations (CM, DOORS, OSLC, Rose, Simulink and XML) > Configuration management tool integration > How to... > Perform check out operations > Undoing a check out operation (CM tool integration)
  
Undoing a check out operation (CM tool integration)
* 
A check out undo operation can undo changes made to descendent Packages.
To undo a check out operation:
1. From Modeler, right-click the Package whose check out you want undo, point to Configuration Management, and then click Undo Check Out.
2. From the confirmation dialog that lists the Packages to which the undo check out operation will apply, click OK.
* 
To undo a check out operation, you require write access to the CM tool Package, and Owner access permissions to the Modeler Package.