I would like to know how to set up various priorities of Service desk message in Solution Manager apart from Very High, High, Medium and Low.
Points will be rewarded suitably.
Go to the SPRO activity: SAP Solution Manager Implementation Guide > SAP Solution Manager > Scenario-Specific Settings > Service Desk > Maintain Categories and Priorities > Maintain Priorities of Dates
This will change the priorities in CRM_ORDER, DNO_CRM_MONITOR and PFAC, but not in NOTIF_CREATE and not in Help > Create Support Message.
The SLF1 priority values in transaction DNO_CUST01, show up in NOTIF_CREATE.
I haven't found the ones that modify the values in Help > Create Support Message, which is why I just leave the priorities alone. This ensures they are consistant in the various methods of creating a Support Message.
Hope this helps.