Solution : https://service.sap.com/sap/support/notes/131810 (SAP Service marketplace login required)
Key words : 
additional key words subcontracting, transaction 'enter return delivery', return delivery, selection screen, quantity proposed, solution carry, enclosed correction, overwritten, quantities, components
Related Notes : 
       
| 373988 | Quantty propsd SC compnnt for materl docmnt refrnce | 
| 132835 |