Solution : https://service.sap.com/sap/support/notes/675262 (SAP Service marketplace login required)
Key words : 
tte tax code, external tax system, external tax calculation, terms taxes, canada reason, program error, support package 03, longer occur, support package 04, simply import
Related Notes : 
       
| 486061 | How to get patches for CRM Internet Pricing Configurator |