For the managed package runtime, to associate all the events tracked for a single session, the tracking system logs an Interaction Id that is unique for the session. To provide this Id from an Omniscript or Integration Procedure, add a key/value pair to the Tracking Custom Data field in the Configuration section.
This information is for Omnistudio for Managed Packages. For Omnistudio on standard runtime, see Omnistudio Help.
For example:
CustomerInteractionId: %InteractionId%
To provide the Interaction Id in a REST call, specify it as a parameter:
/apex/DFOmniScriptUniversalPageConsole?id={0}&OmniScriptType=PolicyServicing&OmniScriptSubType=PaymentExtension&OmniScriptLang=English&scriptMode=vertical&layout=lightning&ContextId={0}&InteractionId={1}&Role={2}