Notice! This page describes the nature of the error using a hypothetical example and not the erroneous data of the input test file. You should however be able to apply this information to your error case.
Error description:
The XML file is not well-formed. Tags are not correctly nested or tag is opened and closed with different tag-name, check for typing mistakes.
Example 1:
Here the attribute Ccy of element <InstdAmt> is missing the closing quotation mark which is causing the parsing to fail. This can be fixed by adding the missing quotation mark.
Example 2:
For example this XML would produce the error.
<company>
<name>XMLDation.com
</company>
</name>
In the example <name> element is a child element of <company> but the closing tag of </name> comes after the closing tag of </company>. Correct way to present this would be:
<company>
<name>XMLDation.com</name>
</company>
Explanation of the error message given by validator:
Opening and ending tag mismatch: tag1 line 38 and tag2
Where tag1 starting at line 38 and tag2 is the position where the error is noticed.