I am a bit confused about what you wish to achieve.
Do you want to update data from your Innovation Suite sandbox to an external ITSM system for example?
If so you should use a Connector (Integration Services). For now most ports from a sandbox are closed. We open ports for some services, one of them is the Connector.
I recommend to have a look to this great blog post from Justin Bakker about him creating a connector end to end: