Hi Sumita,
"isManaged" is the CA Spectrum attribute that sets a device model into or out of maintenance mode.
The Hex equivalent of isManaged=0*1295d
this attribute is of type boolean. its value can be Yes or No (True or False)
Model_Handle is the attribute that identifies an existing model. The Hex equivalent of Model_Handle=0*129fa
but the value of Model_Handle determines/identifies the existing model. The value of Model_Handle is not editable.
To see the values of these attributes for a particular model:
1. Select that model in the OneClick's Navigation hierarchy.
2. In Component Detail pane, click Attributes tab, and search for Model_Handle and isManaged in the search bar.
3. Double-click the attribute displayed in the left pane to see its value in the right pane.
Hope this helps! You can read further information here: Process SAML Authentication.