Solution : https://service.sap.com/sap/support/notes/119734 (SAP Service marketplace login required)
Key words :
additional key words atp, conversion atp checks, converting planned order, planned order, production order, theplanned order, problem occurs, status 't', depending requirement, advanced correction
Related Notes :
| 163832 | SUM: ATP all existing availability check notes |
| 126811 | AFS V1.0C Fixpack #4 |
| 125236 | ATP in PP failed although it's stock available |
| 113578 | Availibility check in production order |