Solution : https://service.sap.com/sap/support/notes/524558 (SAP Service marketplace login required)
Key words : 
terms enterprise buyer professional edition, scale table /1cn/lbpscaledef failed, support package versions lower, check badi prc_pricing_init, combatting tax evasion, attached correction instructions, plan driven procurement, ebpcrm source release 3, import support package 01, support package level 33
Related Notes : 
       
| 601105 | Release restrictions R/3 Plug-in 2003.1 | 
| 535645 | Law on combatting tax evasion and external systems | 
| 534817 | |
| 532244 | Inexplicable errors in the price calculation | 
| 510665 | |
| 510123 | SAPKU35001: Support Package 01 for SRM 2.0 | 
| 508605 | |
| 487421 |