Workflow scope restrictions There are some restrictions to public and private application scopes. During runtime, publicly scoped workflows can access other application resources, as long as these resources are set to be accessible to all application scopes. Privately scoped workflows in a private application scope can only access resources private to its scope. Due to scope access boundaries, any privately scoped workflows that make calls out to other scoped resources fail with either an exception or a hung activity while waiting for returned results. This occurs when making calls to these common global resources: ECC queues Tasks Approvals Events SLA timers Timers Script includes Business rules Workflow APIs As you design workflows, validate the visibility and accessibility of all resources prior to deployment. See Application scope. For information on how to configure the scope for a workflow, see Workflow properties.