Solution : https://service.sap.com/sap/support/notes/325269 (SAP Service marketplace login required)
Key words :
additional key words atp, production order message ag800, local atp display, -party order processing, individual purchase order, detailed results form, missing parts list, availability check, apo system, environment => availability
Related Notes :
| 536513 | ATP: delivery proposal screen for one component only |
| 325388 | Error in component single check |