Solution : https://service.sap.com/sap/support/notes/492387 (SAP Service marketplace login required)
Key words :
schedule line data, schedule line tabstrip, empty scheduling screen, availability check reason, attached program corrections, sales order, system displays, incorrect item, display error, display update
Related Notes :
| 440179 | Global ATP in APO (Releases 3.0, 3.1) - Composite SAP note |
| 423564 | Delivery group correlation in APO |