Hi Ravinder,
I can notice that your sender system is an ABAP one, you can try to set the connection to unicode like this note explains:1768901 - PI mapping runtime ParserException
The java mapping solution can be use to determine what character to accept, easier than to set the erroneous (like this other Dubey Sachi's example Special character’s handling in PI/XI simplest ever.). The Portuguese characters should be accepted in the mapping, i think the problem is with a special control one.
Regards.