Parallel Interaction is a Cognos TM1 server-related feature that allows for greater concurrency of read and write operations on the same cube object. For more details, see "Using Parallel Interaction with a Cognos(r) TM1(r) server" in the IBM Cognos TM1 Operation Guide.
Parameter type: optional, static
As of Cognos TM1 version 10.1, Parallel Interaction is enabled by default which uses Parallel Interaction for all cubes in the TM1 server.
To manually disable Parallel Interaction for all cubes, set ParallelInteraction=F.