Solution : https://service.sap.com/sap/support/notes/501491 (SAP Service marketplace login required)
Key words :
afs solution change, source code correspondingly, 1st bom component, 1st component, importing boms, batch input, system saves, transaction cs01, terms rcsbi040
Related Notes :
501564 | Create BOM via batch input, lowercase letter |
388627 | Batch Input bills of material - AFS data is not created |