Unable to add New email templates into template_config.xml

[sandeep570]

Hi Team,
I am unable to add the New email templates into the template_config.xml file and below is the error. Please guide me on how to add the additional email templates. I am created a template_config.xml in my custom module under etc folder and after clearing the cache I am seeing the below in Sailthru transactional email list.
Error:
1 exception(s): Exception #0 (Magento\Framework\Exception\LocalizedException): More than one node matching the query: /config/template_list/template, Xml is: <?xml version="1.0"?> <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="template_list.xsd"> <!-- Creditmemo --> <template_list> <template> <id>sales_email_creditmemo_template</id> <name>Credit Memo Email Template</name> <custom_template_source>sales_email/creditmemo/template</custom_template_source> <sort_order>33</sort_order> </template> <template> <id>sales_email_creditmemo_guest_template</id> <name>Credit Memo Email Template for Guest</name> <custom_template_source>sales_email/creditmemo/guest_template</custom_template_source> <sort_order>34</sort_order> </template> </template_list> </config>