2462714 - MAIN_NEWBAS/XPRAS_AIMMRG: UC_OBJECTS_NOT_CONVERTIBLE

While running an upgrade on SAP ERP/ SAP Solution Manager system, you face an error and following is displayed in SUM GUI:

Checks after phase MAIN_NEWBAS/XPRAS_AIMMRG were negative!

Last error code set:
Detected 3 aborted activities in 'XPRASUPG.ELG'
Calling '/usr/sap/<SID>/DVEBMGS49/exe/tp' failed with return code 12, check
/usr/sap/<SID>/SUM/abap/log/SAPup.ECO for details

*ERROR* :
Detected the following errors:

# /usr/sap/<SID>/SUM/abap/log/SAPR740XPRA90000297.<SID>:
1 ETP109 version and release : "380.58.35" "749"
1 ETP198
2 EPU126XPost-import methods for change/transport request:
"SAPK740XPRA90000297"
4 EPU111 on the application server: "denousmpr"
2 EPU122XPost-import method "AFTER_IMP_VC_DPR_FC" started for "VC_DPR_FC" "C",
date and time: "20170424085250"
1AETR012XProgram canceled (job "RDDEXECL", number "08524900")
1AEPU320 See job log"RDDEXECL""08524900""SMP"

This error results into the dump(s) like this:

Category                    ABAP Programming Error
Runtime Errors              UC_OBJECTS_NOT_CONVERTIBLE
ABAP Program                SAPLSEDA
Application Component       BC-DWB-TOO-ABA

Data objects in Unicode programs cannot be converted.

The current ABAP program "SAPLSEDA" had to be terminated because it has come across a statement that unfortunately cannot be executed.

UC_OBJECTS_NOT_CONVERTIBLE,  XPRA, XPRAS_AIMMRG,  SAPLSEDA, Class pool, BADI, D010INC, D010TAB, OBSOLETE_IN_VERSION, RDDEXECL, Version, Version management, SAPLSEDA, UC_OBJECTS_NOT_CONVERTIBLE. , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem