Solution : https://service.sap.com/sap/support/notes/84823 (SAP Service marketplace login required)
Key words : 
additional key words md01, solution implement correction p30k170715, planning time fence, periodic lot size, lot-sizing procedure, lot size indicator, pps planning calendar, planning calendar dates, flexible period length, period start
Related Notes : 
       
| 207197 | Additional info for Note 186608 | 
| 186608 | Periodic lot size: Order proposal too late | 
| 184406 | Prd lot size: Order proposal in planning time fence | 
| 27876 | Planning time fence (man.firming/display/segments) |