3546849 - SUM Stops at phase PMAIN_NEWBAS/JOB_RSUPG_WRP_DT with runtime error "IMPORT_UNEXPECTED_END_OF_DATA"

The following error occurred during upgrade in phase MAIN_NEWBAS/JOB_RSUPG_WRP_DT. 

1 ETQ234 Call of function module "SUBST_LIST_SYS_LOGS" by RFC succeeded
4 ETQ010 Date & Time: <timestamp>
4 ETQ268 Check file "JOB_<Job ID>.DMP" for the job log, SYSLOG, and short dump or use transactions SM37, SM21, and ST22
2EETQ262 Batchjob "RSUPG_WRP_REGEN_SAPALL" aborted
4 ETQ010 Date & Time: <timestamp>
1EETQ399 Last generated error message is: Batchjob 'RSUPG_WRP_REGEN_SAPALL' with id '<Job ID>' is aborted
1EETQ203 Upgrade phase "JOB_RSUPG_WRP_DT" terminated with errors ("<timestamp>")

In the Job log, there is following entries.

Step 001 started (program RSUPG_WRP_REGEN_SAPALL, variant , user ID DDIC)
Internal session terminated with a runtime error IMPORT_UNEXPECTED_END_OF_DATA (see ST22)

In ST22, the runtime error message is shown as following. 

Short Dump Category:          ABAP programming error
Runtime Error:                IMPORT_UNEXPECTED_END_OF_DATA
ABAP Program:                 FUGR OCS_CRM
ABAP Main Program:            SAPLOCS_CRM
ABAP Package:                 SPAM
Software Component:           SAP_BASIS
Application Component:        BC-UPG-OCS 

NetWeaver ABAP system.

SUM, RSUPG_WRP_REGEN_SAPALL, aborted, ABAP programming error, runtime error, IMPORT_UNEXPECTED_END_OF_DATA, exception, CX_SY_IMPORT_FORMAT_ERROR, program, SAPLOCS_CRM, RSSPAM_UPDATE_SYSINFO_CACHE, JOB_RSUPG_WRP_DT , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , BC-UPG-OCS , Online Corr. Support (Tools:Supp.-Pack., Addon Install/Upgr) , Problem