Hi All,
Please see below note if you are moving from kernel lower than 740 to >740:
2154997 - Migration of hdbuserstore entries to ABAP SSFS.
Also see below notes :
1904826 - Upgrade error "Connect via SAPUSER not supported for kernel >=740 and 1639578 - SSFS as password store for primary database connect
Warm Regards,
Ajay Kalra