I have a IDOC->PI->WMQ (JMS) scenario.
The IDOC is a promotion IDOC which sometimes has swedish characters.
It is a pass through scenario with no mapping.
In PI I can see the payload swedish characters åäö intact. But when I send to target JMS queue they are replaced by ���.
I maintained JMS.TextMessage.charset iso-8859-1 in the additional parmeters and it worked fine.
But when I send upper case characters ÅÄÖ it fails.