3215604 - SUM: Error in phase INSTANCELIST_PRE. Inconsistency when reading profile

• During an upgrade, in phase INSTANCELIST_PRE, SUM fails with this error in INSTANCELIST_PRE.LOG:

3 ETQ399 Calling sappfpar.exe in '\usr\sap\SID\SUM\abap\exe' with profile '\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\P30_ASCS01_XXXXXXXXXXXXXX' to retrieve profile parameters.
3 ETQ120 XXXXXXXXXXXXXX: PID XXXX execute '~\exe\sappfpar.exe all "pf=\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\P30_ASCS01_XXXXXXXXXXXXXX"', output written to '\usr\sap\SID\SUM\abap\log\SID_ASCS01_XXXXXXXXXXXXXX.PPR'.
3 ETQ123 XXXXXXXXXXXXXX: PID XXXX exited with status 0 '' (time:    0.00 real)
3 ETQ399 Reading profile parameters from '\usr\sap\SID\SUM\abap\log\SID_ASCS01_XXXXXXXXXXXXXX.PPR'.
3 ETQ399 Retrieved profile value 'DIR_CT_RUN' as '\usr\sap\SID\SYS\exe\uc\XXXXXX'.
3 ETQ399 Kernel is replicated from \usr\sap\SID\SYS\exe\uc\XXXXXX.
1 ETQ399 SYSTEM MANAGER: enhance instance list for Instance Number: 00, Instance Host: XXXXXXXXXXXXX
1 ETQ399 SYSTEM MANAGER: determine profile files.
1 ETQ399 SYSTEM MANAGER: determine SAP profiles.
1 ETQ399 SAPCONTROL MANAGER: get parameter SAPPROFILE with host: XXXXXXXXXXXXX and instance: XX
1 ETQ399 SAPCONTROL MANAGER: call sapcontrol with systempki
3 ETQ120 XXXXXXXXXXXXXX: PID XXXX execute '\usr\sap\SID\D03\exe\sapcontrol.exe -format script -host XXXXXXXXXXXXXX-nr 00 -systempki \\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\SID_XXX_XXXXXXXXXXXXXX -function ParameterValue SAPPROFILE', output written to '\usr\sap\SID\SUM\abap\log\SAPPROFILE_XXXXXXXXXXXXXX_XXLOG'.
3 ETQ123 XXXXXXXXXXXXXX: PID 2580 exited with status 0 '' (time:    0.00 real)
1 ETQ399 SYSTEM MANAGER: found SAPPROFILE '\usr\sap\SID\XXX\exe\sapcontrol.exe=>sapparam: "DIR_PROFILE": must not be in "\usr\sap\SID\SYS\profile\DEFAULT.PFL"'
1 ETQ399 SAPCONTROL MANAGER: GetStartProfile with host: XXXXXXXXXXXXXX and instance: XX
1 ETQ399 SAPCONTROL MANAGER: call sapcontrol with systempki
3 ETQ120 XXXXXXXXXXXXXX: PID XXXXX execute '\usr\sap\SID\D03\exe\sapcontrol.exe -format script -host XXXXXXXXXXXXXX-nr 00 -systempki \\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\SID_XXX_XXXXXXXXXXXXXX -function GetStartProfile', output written to '\usr\sap\SID\SUM\abap\log\STARTPROFILE_XXXXXXXXXXXXXX1_00.LOG'.
3 ETQ123 20220612214849: PID XXXXX exited with status 0 '' (time:    0.00 real)
1 ETQ399 SYSTEM MANAGER: GetStartProfile found '\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\SID_XXX_XXXXXXXXXXXXXX'
1 ETQ399 SYSTEM MANAGER: Instance profile '\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\DEFAULT.PFL"' detected.
1EETQ399 Last error code set is: class ULException: Cannot open
1EETQ399X'\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\DEFAULT.PFL"': The filename, directory name, or volume label
1EETQ399Xsyntax is incorrect.
1EETQ399X
1EETQ399XInconsistency when reading profile '\\XXXXXXXXXXXXXX1\sapmnt\SID\SYS\profile\DEFAULT.PFL"'
1EETQ399XDefault profile is  '\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\DEFAULT.PFL'
1EETQ399XError reading system profiles '\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\DEFAULT.PFL'
1EETQ399X'\\XXXXXXXXXXXXXX\sapmnt\SID\SYS\profile\DEFAULT.PFL"'
1EETQ204 Upgrade phase "INSTANCELIST_PRE" aborted with severe errors ("XXXXXXXXXXXXXX")

SAP NetWeaver.

DIR_PROFILE, INSTANCE, INSTANCELIST_PRE, DIR_PROFILE, syntax is incorrect , KBA , BC-UPG-TLS-TLA , Upgrade tools for ABAP , Problem