When loading an XML with XOG, the following error is logged:
<ErrorInformation><Severity>FATAL</Severity><Description>Exception while processing client request</Description><Exception type="com.niku.xog.XOGException">Input document contains Illegal HTML character for object application</Exception></ErrorInformation>
An invalid character is present in the xml file. This can include non english characters.
Release : All Supported
Component : Clarity XML Open Gateway (XOG)
The error message does not note the location of the bad character, so unfortunately a review of the load file will be the only method from a Clarity support perspective to determine where the character is located.