document merge custom xml

I want to generate a table in word with list of customer signatories from an input xml using “XML Merge Document” step in CLM which is as follows:

<CustomerSignatories>
    <Signatory>
      <ReferenceSerialNumber>1</ReferenceSerialNumber>
      <FullName>John Doe</FullName>
      <Email>john.doe@example.com</Email>
    </Signatory>
    <Signatory>
      <ReferenceSerialNumber>2</ReferenceSerialNumber>
      <FullName>Jane Smith</FullName>
      <Email>jane.smith@example.com</Email>
    </Signatory>
  </CustomerSignatories>

I have tried to create a word template as follows:

 I have also tried with TableRow merge tags but that also is not working and both of them are giving this error:

Any help is greatly appreciated. I can customise the input xml if needed. Thanks in advance.