Solution : https://service.sap.com/sap/support/notes/177680 (SAP Service marketplace login required)
Key words : 
additional key words conversion, reach respective short dumps, choose database request -> terminated -, repeat phase pcon_<rel>, solution start transaction se14, phase pcon_<rel>, pcon_<rel> phase, adoim_<rel> phase, symptom errors occurred, entire work list
Related Notes : 
       
| 339126 | Table conversion error |