Solution : https://service.sap.com/sap/support/notes/645066 (SAP Service marketplace login required)
Key words : 
terms material number conversion reason, program error solution import, internally assigned number, formula tab page ', material number, output material, system determines, primary output, system displays, leading zeros
Related Notes : 
       
| 631420 | RMGMT210: Corrections in Support Package 04 |