Solution : https://service.sap.com/sap/support/notes/455605 (SAP Service marketplace login required)
Key words : 
system checks prior, transaction tax engine, tax calculation, tax classification, terms taxes, access sequence, mwst reason, business partner, destination country, support package 07
Related Notes : 
       
| 484524 | |
| 455541 | |
| 442332 | SAPKU30006: Support Package 6 for EBP 3.0/CRM 3.0 |