How to modify SAP class for international processes

If you will be calculating international taxes, modify the following SAP class:

• CL_XTAX_RULES_CONFIGURATION 

• Method: CHECK_DESTINATION_COUNTRY 
• Action: Comment out all executable lines of code except  

• o_dest_country_rel=’X’. default always relevant!!!!!!! 

After modifying the SAP class, add it to the appropriate transport and activate it with CTRL-F3.