Solution : https://service.sap.com/sap/support/notes/361705 (SAP Service marketplace login required)
Key words :
additional key words va01, attached source code corrections, rules-based availability check, incorrect index structure, apo availability screen, apo system, sales order, displayed immediately, table xmverf_pos /, item number
Related Notes :
| 400219 | Sales document availability check runs too often |
| 179948 | Processing sales documents with SAP APO |
| 111548 | Copy assembly order: Termination with VV400 |