Mosinkhan -
Open the 'Choose Api Version' drop down box in the upper left corner of Zedi.
Scroll all the way down to get to the DFM versions supported in Zedi.
You could also directly query the OCUM database, rather than using the APIs.
I hope this response has been helpful to you.
At your service,
Eugene E. Kashpureff, Sr.
Independent NetApp Consultant http://www.linkedin.com/in/eugenekashpureff
Senior NetApp Instructor, FastLane US http://www.fastlaneus.com/
(P.S. I appreciate 'kudos' on any helpful posts.)