Hi Asif,
With this source (your original XML has an error in the ns1:ID tag:
<?xml version="1.0" encoding="UTF-8"?>
<ns1:Records NumberOfRecords="1" ChangeTimestamp="2015-11-23T12:15:51.0Z" xmlns:ns1="http://www.xyz.com/storeweaver/records/2.0.0">
<ns1:Record Type="add">
<ns1:ID>123456</ns1:ID>
<ns1:FirstName>Test</ns1:FirstName>
<ns1:LastName>Test</ns1:LastName>
<ns1:Language>EN</ns1:Language>
<ns1:Address>abc</ns1:Address>
</ns1:Record>
</ns1:Records>
With this XSL:
<?xml version="1.0" encoding="UTF-8"?>
<ns0:stylesheet version="1.0" xmlns:ns0="http://www.w3.org/1999/XSL/Transform">
<ns0:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<ns0:template match="/">
<ns1:Records xsi:schemaLocation="http://xyz.com/records/2.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" NumberofRecords="1" ChangeTimestamp="2015-11-23T12:15:51.0Z" xmlns:ns1="http://www.xyz.com/storeweaver/records/2.0.0">
<ns0:copy-of select="//ns1:Record"/>
</ns1:Records>
</ns0:template>
</ns0:stylesheet>
I get this XML with the attributes:
<?xml version="1.0" encoding="UTF-8"?>
<ns1:Records xmlns:ns1="http://www.xyz.com/storeweaver/records/2.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xyz.com/records/2.0.0" NumberofRecords="1" ChangeTimestamp="2015-11-23T12:15:51.0Z">
<ns1:Record Type="add">
<ns1:ID>123456</ns1:ID>
<ns1:FirstName>Test</ns1:FirstName>
<ns1:LastName>Test</ns1:LastName>
<ns1:Language>EN</ns1:Language>
<ns1:Address>abc</ns1:Address>
</ns1:Record>
</ns1:Records>
Regards.