3532973 - IBM i: Shadow instance could not be created

Following error happened during the upgrade phase "PREP_INSTALL/SHDINST_OS"

1 ETQ201 Entering upgrade-phase "PREP_INSTALL/SHDINST_OS" ("20241001012353")
2 ETQ367 Connect variables are set for standard instance access
4 ETQ399 System-nr = '06', GwService = 'sapgw06' Client = '000'
4 ETQ399 Environment variables:
4 ETQ399   dbs_db4_schema=R3<SID>DATA
1 ETQ206 Executing pre-phase DB specific actions 0/1.
1 ETQ200 Executing actual phase 'PREP_INSTALL/SHDINST_OS'.
3 ETQ399 Executing command: CALL PGM(SAP<SID>UPG/RUNLIBCMD) PARM('SAP<SID>UPG' 'CRTR3INST SID(<SID>) INST(08) ROLE(*SHADOW) PROFILE(''/sapmnt/<SID>/SUM/abap/system/<SID>/SYS/profile'')  ').
1EETQ399 Last error code set is: SHADOW Instance could not be created. Check joblog for details.
1EETQ204 Upgrade phase "SHDINST_OS" aborted with severe errors ("20241001012355")

SAP system on IBM i server

PREP_INSTALL/SHDINST_OS, RUNLIBCMD, CRTR3INST, Error, Shadow Instance, can not be created,  , KBA , BC-INS-AS4 , Installation and Upgrade AS/400 , BC-OP-AS4 , IBM AS/400 , Problem