2495076 - Java cannot start due to error SfEIllegalArgument: SfCConfig::expand: unmatched

During your upgrade activity, java instance cannot start due to error like followings (log in dev_jstart in work folder usr/sap/<SID>/<Instance>/work):

F [Thr 3888] *** LOG => connected to Enqueue Server.
F  [Thr 3888] *** LOG => connected to Message Server.
F  [Thr 3888] *** LOG => Starting run level 1.
F  [Thr 3888] *** ERROR => SfEIllegalArgument: SfCConfig::expand: unmatched ']' in : 2*$link{[EXTERNAL]#vm.params/maxHeapSize,memory}*1  [sfxxlib.hpp  3727]
F  [Thr 3888] *** LOG => Instance state is "Not started" (STARTING @ 0, INACTIVE).
I  [Thr 3888] MPI: dynamic quotas disabled.
I  [Thr 3888] MPI init, created: pipes=4000 buffers=2718 reserved=815 quota=10%, buffer size=65536, total size MB=170
I  [Thr 3888] *** ERROR => FcaInit: already initialized [fcaxxcomm.c  956]
I  [Thr 3888] *** ERROR => EvtRmMgt: Evt Mgt Table not init'd [evtnt.c      255]
I  [Thr 3888] *** ERROR => ShmDelete: Invalid shared memory Key=62. [shmnt.c      753]
I  [Thr 3888] *** ERROR => ShmCleanup: ShmDelete failed for Key:62. [shmnt.c      872]
I  [Thr 3888] *** ERROR => ShmCleanup(62) failed 1 [mpixx.c      4615]
F 
F  ********************************************************************************
F  *** ERROR => Shared memory initialization failed.
F  ***
F  *** Please see section 'Shared memory issues'
F  *** in SAP Note 1316652 for additional information and trouble shooting advice.
F  ********************************************************************************
F 
F  [Thr 3888] *** LOG => exiting (exitcode -21001, retcode 2).

• SAP NetWeaver 7.3 and above

SfCConfig::expand: unmatched, exitcode -21001, instance.properties , KBA , BC-JAS-SF , Startup Framework , Problem