ThingWorx Model Definition and Composer > System > Subsystems > Integration Subsystem
  
Integration Subsystem
From the Integration Subsystem:
View the status of the Integration Runtimes.
Start and stop the Integration Subsystem to temporarily suspend access to the Integration Runtimes. This may be useful to troubleshoot system issues or during system maintenance.
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When the Integration Subsystem is stopped, the Available for Requests checkbox remains available for the IntegrationRuntimes. The IntegrationRuntimes bound to the subsystem can be available to accept requests, although the subsystem is brought down.