2487445 - Error in SUM Execution Phase MAIN_SWITCH/STARTSAP_TRANS on IBM i

During a release upgrade or SPS update with SUM, you receive the error below in Browse : /usr/sap/<SID>/SUM/abap/log/SAPup.log 

CURRENTPHASE MAIN_SWITCH/STARTSAP_TRANS                                                                                            
...started at 20170609140324                                                                                                       
...begin processing at 20170609140324                                                                                              
# Phase error status set: NO SYSTEM START                                                                                          
# Resource usage self:     0.1/    0.1/0MB usr/sys/mem, children     0.5/    0.0/0MB usr/sys/maxmem.                               
...finished at 20170609140407 with status FAILED.                                                                                  
# Error message set: 'Process /usr/sap/<SID>/SYS/exe/run/sapcontrol exited with 2, see '/usr/sap/<SID>/SUM/abap/log/SAPup.ECO' for detai
System start failed'                                                                                                               
...begin dialog at 20170609140415                                                                                                  
 ************End of Data********************    


But the SAP is actually running. In the SAPup.ECO log, you can see DLTOLDPKGS status is GRAY

Browse : /usr/sap/jed/SUM/abap/log/SAPup.ECO  

 name: DLTOLDPKGS     
 description:         
 dispstatus: GRAY     
 textstatus: Stopped  
 starttime:

SAP on IBM i

KBA , BC-INS-AS4 , Installation and Upgrade AS/400 , BC-OP-AS4 , IBM AS/400 , Problem