Thank you S Blakely,
To answer you question,
Do you have the correct schema and wsdl configured in the XML profile? - YES
Actually we send Katakana & Hirahana Japanese characters in XML like below,
<v11:frgnfirstName>マレーシア シンガポール</v11:frgnfirstName>
<v11:frgnlastName>篠田</v11:frgnlastName>
It gets converted to below,
<v11:frgnfirstName>マレーシア シンガフール</v11:frgnfirstName>
<v11:frgnlastName>ç¯ ç”°</v11:frgnlastName>
Request is blocked at F5 with Validation Error: Malformed XML data
Will relax_unicode_in_xml to 1 resolve this issue and F5 will pass the request to services end?
Br,
Nakul