2357181 - SUM errors in phase MAIN_UPTRANS/ASCS_SPLIT: Cannot create a file when that file already exists.

 An error occurs during phase MAIN_UPTRANS/ASCS_SPLIT in Software Update Manger (SUM), the error message in the log file ASCS_SPLIT.LOG is as below:

4EETQ399 An error occurred during the installation of the
  4EETQ399 SAP service SAP<SID>_:

4EETQ399 Possibly the password for user <Domain>\SAPService<SID> entered in phase
4EETQ399 INITPUT was wrong. You can reset it using the following dialog:
4EETQ399 On the SUM UI, click "More" -> "Utilities" -> "SUM Parameters" -> "Standard Parameters"
4EETQ399 Click "Next" until the field for user <Domain>\SAPServiceM<SID> appears.
4EETQ399 Change the password and repeat the current phase.
4EETQ399 In case the service cannot be started automatically,
4EETQ399 try to execute SAPSTARTSRV.EXE manually using the following syntax:
4EETQ399 :\usr\sap\<SID>\ASCS\exe\sapstartsrv.exe -r 
4EETQ399 -p \\<hostname>\sapmnt\<SID>\SYS\profile\<SID>_ASCS_<hostname> -s <SID> -n 
4EETQ399 -U <Domain>\SAPService<SID> -P <PASSWORD> -e <Domain>\<sid>adm
4EETQ399 and check if the service SAP<SID>_ can be stopped and restarted.
1EETQ399 Failed!
1EETQ399 Last error code set is: Action 'install' for XXX service failed, see phase log for details: Cannot create a file when that file already exists.

1EETQ204 Upgrade phase "ASCS_SPLIT" aborted with severe errors 

Note: SAP<SID>_  should have a numerical value after the underscore as the instance number of the shadow, for example: SAP<SID>_3

Now the command generated to create the operating system service is missing the Instance number, in the SAPup.ECO has the following line: 

## Phase MAIN_UPTRANS/ASCS_SPLIT:

• ...

EXECUTING :\usr\sap\<SiD>\ASCS\exe\sapstartsrv.exe -r -q -p \\<hostename>\sapmnt\<SID>\SYS\profile\<SID>_ASCS_<hostname> -s <SID> -n "" -U <Domain>\SAPService<SID> -P <HIDDEN> -e <Domain\<sid>adm
SAPup> Process with PID <XXX> terminated with status -1 at XXXXXXXX!

SAP ABAP systems

enque, Central Services, INITSUBST, ASCS_ASK, SUM Parameters, Cannot create a file when that file already exists , KBA , BC-UPG-PRP , Upgrade Preparation , Problem