Solution : https://service.sap.com/sap/support/notes/752053 (SAP Service marketplace login required)
Key words :
unexpected xml element <{http, expectedunexpected xml element <{http, system error occurs, change pushbutton select, instance attribute visibility, object type field, error messages appears, type reference type, relevant support package, class attribute 'lcname'
Related Notes :
| 750511 | SAP Exchange Infrastructure 3.0: Patch procedure >= SP04 |