VIAVI TestCenter: Why does STC shows the error message: The port at //x.x.x.x/a/b is reserved by <<USER>>

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VIAVI TestCenter: Why does STC shows the error message: The port at //x.x.x.x/a/b is reserved by >
This issue may occur if somebody else reserved the port you were using during your test.  Please validate if any other user reserved the port or if there's any script running that could be forcing the port reservation with RevokeOwner=True, e.g. stc.perform("ChassisConnect", Hostname="x.x.x.x") stc.perform("CreateAndReservePorts", LocationList=["x.x.x.x/a/b","x.x.x.x/a/c"], RevokeOwner=True)