Hi Tsutomu,
We would normally use Symantec Workflow to make this integration work, but it always depends on what product is on the other side. Symantec's ITMS is very open for integration.
I apologise it's a bit of a general response, however without knowing what the other product is, then it's difficult to answer specifically. If you have any more information on this and the data you would like to share between both systems, then we may be able to help with suggestions to meet your requirements.
Thanks