Solution : https://service.sap.com/sap/support/notes/1270081 (SAP Service marketplace login required)
Key words : 
erp srm  integration scenarios, symptom trouble-shooting guidelines, terms trouble shooting, srm-ebp-esa, forward error handling, enterprise services solution, error handling, esa reason, enterprise services, synchronous services
Related Notes : 
       
| 1286936 | PI configuration for SRM - additional information |