Document.XMLShowAdvancedErrors Property (Word)
Returns or sets a Boolean that represents whether error message text is generated from the built-in Microsoft Word error messages or from the Microsoft XML Core Services (MSXML) 5.0 component included with Office.
Using advanced error messages from the MSXML 5.0 component provides more specific error messages. There are approximately 500 error messages provided through the XML Core Services that are accessible when the XMLShowAdvancedErrors property is True.
Word has approximately 50 built-in generic schema errors. When the XMLShowAdvancedErrors property is False, Word uses the built-in error messages for errors generated in XML documents.