We have a Symantec System Center (ver. 10.0.1.1009) in our environment and all of our clients are using SAV 10.1 and 10.2.
It is not recommended that the SSC be an earlier version than your SAV clients (the exception being SAV 10.2.x, which is managed by 10.1.x SSC). Communication errors can occur. I would recommend bringing SAV to the latest build, all around.
The following includes links to migration documents:
Best practices for configuring Symantec AntiVirus Corporate Edition 10.x
http://www.symantec.com/docs/TECH101213
Release notes for Symantec Client Security 3.1.x and Symantec AntiVirus 10.1.x
http://www.symantec.com/docs/TECH101820
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