Solution : https://service.sap.com/sap/support/notes/764990 (SAP Service marketplace login required)
Key words :
logical message category 'materialbom_createbomgroup', choose 'inbound function module', desired bom data transfer, prerequisites function module bapi_material_bom_group_create, transfer bom groups, data transfer workbench, bom group manually, bom group selected, -existing bom group, checkbox 'test run
Related Notes :
| 765193 | BAPI_MATERIAL_BOM_GROUP_CREATE and history |
| 617768 | API: How to call CSAP modules |
| 545676 | FAQ BOM data transfer |