Solution : https://service.sap.com/sap/support/notes/62803 (SAP Service marketplace login required)
Key words :
additional key words rush order, note 78474an availability check, derived delivery item category, rush order checks, rush order reaches, schedule line category, delivery item category &, item category determination, valid item category, v1 message number
Related Notes :
| 154935 | Error for conf. qties in deliv.schedule maintennc |
| 140669 | Partially delivered sales order has too low quanty |