Solution : https://service.sap.com/sap/support/notes/117705 (SAP Service marketplace login required)
Key words : 
tvak-delcf <> space, additional key words, attached advance correction, choose environment -> availability, schedule line dates, complete delivery indicator, sales order type, complete delivery, sales order, availability check
Related Notes : 
       
| 385989 | Double requirement for rush order | 
| 133478 | Commitment date active: Incorrect confirmations |