Excuse me, I didn't understand you.
I was seeing on manual for JMS. I think something is wrong on the sending site. May be missing or incorrect setting for the CCSID/character set or th ...
I am not expert in MQ, but I solved some similar problem with Java MQ not with JMS. I hope it can help you.
I think it is problem on sending site no with receiving.
I appear as incorrect definition ...