Thanks for the approach, but iam thinking how can i achieve the below functionality...

next if ( $tag =~ /TotalAmount|NoOfRecords|TotalBatch|CurrentBatch|EOD
+TransactionDate|BankFileSeqNo|TotAmount/i );
[download]

The above are some tags which i want to exclude from being a part fo checksum calculation.. iam browsing XML::Twig doc still not sure how to achieve functionality