Solution : https://service.sap.com/sap/support/notes/1754641 (SAP Service marketplace login required)
Key words : 
tp0/usr/sap/<sid>/sum/abap/bin/shadow, /usr/sap/<sid>/sum/abap/bin/default, terms sum phase, prep_integration/genbuffer_preput reason, newer code development, sap system, return code 16, tp returns, error message, installed properly
Related Notes : 
       
| 1707161 | Central Note - Software Update Manager 1.0 SP06 [lmt_007] | 
| 1680769 | Central Note - Software Update Manager 1.0 SP05 [lmt_006] |