Solution : https://service.sap.com/sap/support/notes/338483 (SAP Service marketplace login required)
Key words : 
additional key words cif, attached source code corrections, system schedules incorrectly, exact requested date, 0b solution implement, initial time, transportation scheduling, availability check, prerequisites prerequisites, interprets
Related Notes : 
       
| 400397 | Trans time not determined correctly | 
| 382746 | Collective note: Delivery+transportation scheduling with APO | 
| 328972 | APO integration of scheduling | 
| 322509 | APO integration of scheduling "Exit inserted" |