In JMS rule, response data type is String. Does pega do conversion into string (guess it would be ASCII characters) as and when the response received from MQ? Should we need to have any explicit logic for conversion of characters.
Does it make any difference if character Data type in JMS rule is used instead of String?
do not think that matters. What application server are you using? Websphere? That should take care of it: see here: IBM Knowledge Center. Websphere Application Server MQ adaptor is supposed to handle that.