Unknown character &xxx;

What does XML_BADEXCHAR mean?

This fault arises when an unrecognized or invalid XML entity reference (e.g., &xxx;) is encountered in the XML file. Valid entity references are either predefined (e.g., <, &) or declared in a DTD/schema, and unknown ones stop parsing.

• The XML file contains an unrecognized or improperly formed entity reference that is not defined.