I am checking on the possibility of correcting the input XML file syntax with XSLT 1.0 mapping, but not able to find any relevant blogs, is this even possible ?

Input is a combination multiple files, below are the sample input and outputs, Please suggest.

Input

<?xml version="1.0" encoding="UTF-8"?>
<HEADER>
    <CHILD BEGIN="1">
        <RECORD SEGMENT="1">
            <FIELD1>value1</FIELD1>
            <FIELD2>2</FIELD2>      
        </RECORD>       
    </CHILD>
</HEADER>
<?xml version="1.0" encoding="UTF-8"?>
<HEADER>
    <CHILD BEGIN="1">
        <RECORD SEGMENT="1">
            <FIELD1>value2</FIELD1>
            <FIELD2>3</FIELD2>

        </RECORD>   
    </CHILD>
</HEADER>

output

<?xml version="1.0" encoding="UTF-8"?>
<HEADER>
    <CHILD BEGIN="1">
        <RECORD SEGMENT="1">
            <FIELD1>value1</FIELD1>
            <FIELD2>2</FIELD2>      
        </RECORD>       
    </CHILD>

    <CHILD BEGIN="1">
        <RECORD SEGMENT="1">
            <FIELD1>value2</FIELD1>
            <FIELD2>3</FIELD2>

        </RECORD>   
    </CHILD>
</HEADER>