The ServiceUser role is specifically designed for end-users of applications built with Visual Builder, a component of Oracle Integration. This role grants permissions to view and run these published Visual Builder applications. However, it does not provide the necessary entitlements to directly access, manage, or invoke the backend integrations within the Oracle Integration service itself. The other roles listed are explicitly granted permissions to run or invoke integrations as part of their administrative, development, or dedicated invocation functions.

A. ServiceDeveloper: This role is for creating, managing, and testing integrations, which explicitly includes the permission to run them.

B. ServiceAdministrator: This is the highest-level role, inheriting all permissions of other roles, including the ability to run any integration.

C. ServiceInvoker: This role's primary and explicit purpose is to invoke (run) integrations, typically for external systems or applications.

1. Oracle Official Documentation - Administering Oracle Integration 3: In the section on "Predefined Roles and Privileges in Oracle Integration 3," the ServiceUser role is defined as having the privilege to "View and run Visual Builder applications." This is distinct from the privileges of other roles which can invoke integrations. The ServiceInvoker role is explicitly defined to "Invoke integrations and view invoked integrations." The ServiceDeveloper and ServiceAdministrator roles inherit these invocation privileges.

Source: Oracle Help Center, Administering Oracle Integration 3, Chapter: "Manage Users, Groups, and Roles", Section: "Predefined Roles and Privileges in Oracle Integration 3".