xmllint --format file.xml

##</code><code>##

 xmllint --format file.xml
file.xml:259: parser error : Opening and ending tag mismatch: CallDetailByService line 207 and CallGroupInfo
                                             </CallGroupInfo>
                                                             ^
file.xml:260: parser error : Opening and ending tag mismatch: CallGroupInfo line 203 and ServiceInfo
                              </ServiceInfo>
                                            ^
file.xml:261: parser error : Opening and ending tag mismatch: ServiceInfo line 80 and InvoiceDetails
      </InvoiceDetails>
                       ^
file.xml:265: parser error : Opening and ending tag mismatch: InvoiceDetails line 7 and CustomerInvoice
</CustomerInvoice>
                  ^
file.xml:266: parser error : Premature end of data in tag CustomerInvoice line 2

^