2530567 - Upgrade stopped in phase PREP_PRE_CHECK/INSTANCELIST_INIT

 An error takes place in phase INSTANCELIST_INIT:

#PREP_PRE_CHECK/INSTANCELIST_INIT:
1 ETQ201 Entering upgrade-phase "PREP_PRE_CHECK/INSTANCELIST_INIT" ("20161230221027")
2 ETQ367 Connect variables are set for standard instance access
4 ETQ399 System-nr = '00', GwService = 'sapgw00' Client = '000'
1 ETQ200 Executing actual phase 'PREP_PRE_CHECK/INSTANCELIST_INIT'.
1 ETQ399 Phase arguments:
2 ETQ399 Arg[0] = 'INIT_LIST'
1 ETQ399 SAPCONTROL MANAGER: SAPupSAPControlManager entered.
1 ETQ399 SAPCONTROL MANAGER: SAPupSAPControlInstanceUnix entered.
1 ETQ399 SAPCONTROL MANAGER: SAPupSAPControlInstanceUnix exit.
1 ETQ399 SAPCONTROL MANAGER: SAPupSAPControlManager exit.
1 ETQ399 SYSTEM MANAGER: create instance list.
1 ETQ399 SAPCONTROL MANAGER: getSystemInstanceList with dumpfile: /usr/sap/SUM/abap/log/SAPCONTROL_INSTANCELIST.OUT
3 ETQ120 20170905221847: PID 26542570 execute '/usr/sap/ABC/SYS/exe/run/sapcontrol -prot NI_HTTP -host sapprd1 -nr 00 -function GetSystemInstanceList', output written to '/usr/sap/SUM/abap/log/SAPCONTROL_INSTANCELIST.OUT'.
3 ETQ122 20170905221847: PID 26542570 exited with status 0 (time: 0.0/ 0.0/ 0.0/0MB real/usr/sys/maxmem)
1EETQ399 SYSTEM MANAGER: Initialize instance list has failed.
1EETQ399 SYSTEM MANAGER: initialize instance list has failed.
1EETQ399 SYSTEM MANAGER: instance list contains no entries.
1EETQ399 Last error code set is:
1EETQ204 Upgrade phase "INSTANCELIST_INIT" aborted with severe errors ("20161230221030")

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KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem