Solution : https://service.sap.com/sap/support/notes/1449999 (SAP Service marketplace login required)
Key words :
user parameter /tdag/cp11, beforethe actual supplier parts, +- supplier part 1 +- supplier part 2, environment parameter cwb_no_sng_compgroup_phantoms, transaction /tdag/cpm00, composition group type, reachduplicate supplier alternative, duplicate supplier listing, 0 support package 01 import, current support package
Related Notes :
1389578 | SAP PRC 2.0: Collection of corrections on the basis of SP00 |