REST API trigger not available in the flow designerIssue REST API trigger will be useful to create a flow that starts when a third-party system sends a REST request to your instance. ReleaseAll releasesCauseREST API trigger requires an IntegrationHub Enterprise subscription. For more information visit the below documentation. Create a flow using the REST API triggerResolutionIntegrationHub plugins require a separate subscription and must be activated by ServiceNow personnel. Kindly go through the below documentation for more information. Request an IntegrationHub plugin **ServiceNow IntegrationHub Enterprise Pack Installer needs to be activated**