Please investigate and release list information of characters that can not be mapped correctly to the character code supported by WCA from UTF-8.

WCA supports the following character encodings:
・ Chinese Simplified
・ Chinese Traditional
・ Japanese EUC
・ Japanese JIS
・ Japanese Shift-JIS
・ Korean euc-kr
・ UTF-8
Western European ISO-8859-1
https://www.ibm.com/support/knowledgecenter/en/SSWU4L/OrgAdmin/imc_OrgAdmin/OrgAdmin_q_a_watson_assistant/How_do_I_change_the_Default_Character_En46.html

I set the Shift-JIS and entered "~".
When I saved the mail template, "~" was converted to "?".

I understand that this is a issue when converting from UTF-8 to Shift-JIS.
However, WCA's Knowledge Center does not describe UTF-8 to Shift-JIS mapping problems.

We need to use Shift-JIS in consideration of the end user who receives WCA mail.
Also, please check for specific characters that convert text from UTF-8 to text garbling and put them in the Knowledge Center.

Best regards,