Solution : https://service.sap.com/sap/support/notes/1250136 (SAP Service marketplace login required)
Key words : 
sap netweaver process integration, system displays error message, terms hop list, system error, system acknowledgement, error occurs, technical error, program error, -business reason, send messages
Related Notes : 
       
| 1320523 | XI 30 Support Package Stack (SPS) 24 | 
| 1170710 | XI 30 Support Package Stack (SPS) 23 |