Solution : https://service.sap.com/sap/support/notes/928035 (SAP Service marketplace login required)
Key words : 
xpra-upg phase, terms xpra-upg, obsolete subroutine/include, syntax error occurs, syntax error, include fscprpprlcdc, obsolete coding, error message -, field upd_scprpprl, unknown reason
Related Notes : 
       
| 737696 | Add. info on upgrade to SAP R/3 Enterprise 4.70 Ext. 2 SR1 | 
| 587896 | Add. info on upgrade to SAP R/3 Enterprise Core 4.70 SR1 |