2505994 - /MessagingSystem/receive/AFW/XI Service Unavailable - application is stopped

• Message cannot be sent from Integration Engine to the Adapter Engine
• When you access this URL: http://<host>:<port>/MessagingSystem/receive/AFW/XI, you could see below error:
  -----------------------------------------------------------------
  503 Service Unavailable
  Application stopped. (Or: "Error: Application is stopped.")
  Details: You have requested an application that is currently stopped.
  -----------------------------------------------------------------
  

• PI Release Independent
• SAP NetWeaver
• SAP Process Integration

/MessagingSystem/receive/AFW/XI, 503, application stopped, com.sap.aii.af.ms.svc, Process Integration 7.0, PI 7.0, PI 7.01, PI 7.02, Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.40, PI 7.40, PO 7.40, Process Orchestration 7.50, PI 7.50, PO 7.50, NetWeaver, XI , KBA , BC-XI-CON-AFW , J2EE Adapter Framework , Problem