Integration Gateway Message Unmarshalling: Could not Parse the XML message String. (158,10415)

Integration Gateway Message Unmarshalling: Could not Parse the XML message String. (158,10415) 

You will notice following error while pinging / testing node from Integration Gateway or Node definition. If you see following error in Logs then this solution will work. 

errorLog.html :

com.peoplesoft.pt.common.XmlException: [Parsing error] msg: Fatal Error: at file null line: 2 column: 359 message: An invalid XML character (Unicode: 0xb) was found in the CDATA section. 

Solution: 

Simply remove special characters from password and try again. It will work.