Solution : https://service.sap.com/sap/support/notes/446308 (SAP Service marketplace login required)
Key words :
additional key words kp06, planning screen fully independent, system behavior lies, enormous performance problems, master data checks, formula-based access, require generic locks, system generates messages, pure display cells, locked period exists
Related Notes :
| 79634 | KP06ff.: Lock logic in manual planning |