Solution : https://service.sap.com/sap/support/notes/1474682 (SAP Service marketplace login required)
Key words :
external rfc server application fails, qrfc server function implemented, sap nw rfc sdk 7, sap nw rfc sdk, abap trfc caller, failed trfc call, rfc trace level, table type foo, table type bar, error message occurs
Related Notes :
1025361 | Support and Availability of the SAP NetWeaver RFC Library |