Solution : https://service.sap.com/sap/support/notes/613970 (SAP Service marketplace login required)
Key words :
functionality availability check, material/plant combination, stock transport order, stock transfer order, stock transfer, purchase order, material exist, correct functioning, product allocation, ther/3 system
Related Notes :
| 636159 | ME21N: No product allocation with Environment->Availability |
| 600883 | ME21N Availability check with product allocation in the APO |