Integrations (PTC products, 3rd party products and code) > 3rd party product integrations (CM, DOORS, 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)
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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 Tools > 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.
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To undo a check out operation, you require write access to the CM tool Package, and Owner access permissions to the Modeler Package.