Solution : https://service.sap.com/sap/support/notes/672566 (SAP Service marketplace login required)
Key words : 
raw material cost estimate, terms multi-level bill, multi-level configuration, costed multilevel bom, incorrectly displayed assembly, configured material, ck13n reason, program error, solution implement, prerequisites
Related Notes : 
       
| 683033 | CK11N and multi-level configuration | 
| 631062 | Configuration with individual requirements |