Solution : https://service.sap.com/sap/support/notes/625074 (SAP Service marketplace login required)
Key words : 
[ipc installation]\lib\properties\rfccommands, [ipc installation]\lib\properties\dbpricingmgntdata, directory           [ipc installation]\lib, xml source code immediately, jar properties\dbpricingmgntdata, current ipc patch, source code location, source code lines, dynamic return parameter, jar xvf sap_ipc
Related Notes : 
       
| 595772 | Return container in IPC user exits | 
| 580235 | Terms of payment determination on item level |