magento-test/app/code/Magento/SalesRule/Test/Mftf/Metadata/SalesRuleLabelMeta.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->
<operations xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:noNamespaceSchemaLocation="urn:magento:mftf:DataGenerator/etc/dataOperation.xsd">
    <operation name="CreateSalesRuleLabel" dataType="SalesRuleLabel" type="create">
        <field key="store_id" required="true">integer</field>
        <field key="store_label" required="true">string</field>
        <field key="extension_attributes">empty_extension_attribute</field>
    </operation>

    <operation name="UpdateSalesRuleLabel" dataType="SalesRuleLabel" type="update">
        <field key="store_id">integer</field>
        <field key="store_label">string</field>
        <field key="extension_attributes">empty_extension_attribute</field>
    </operation>
</operations>