Solution : https://service.sap.com/sap/support/notes/458263 (SAP Service marketplace login required)
Key words :
menu path 'edit->settings->planning table profile ->planning period', planning table profile, additional key words cn21, planning period, symptom user-specific, obsolete redundant function, function code xx26, main program saplcjgr, changed gui status, submenu settings
Related Notes :
| 423724 | Follow-up note: User-specific time profile settings |
| 420985 | User-specific time profile settings |