Solution : https://service.sap.com/sap/support/notes/428004 (SAP Service marketplace login required)
Key words :
'quantities/weights' item tab page, purchase order price unit, enjoy transactions me21n, conversion factors remain, purchase order, order unit, conversion factors, transactions me21, changed values, original status
Related Notes :
| 543800 | |
| 494634 | Conditions not posted completely in IDoc processing |
| 415101 | ME21N Unit of measure missing on condition screen |