indexer.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Indexer/etc/indexer.xsd">
    <indexer id="catalogrule_rule" view_id="catalogrule_rule" class="Magento\CatalogRule\Model\Indexer\Rule\RuleProductIndexer" shared_index="catalogrule">
        <title translate="true">Catalog Rule Product</title>
        <description translate="true">Indexed rule/product association</description>
    </indexer>
    <indexer id="catalogrule_product" view_id="catalogrule_product" class="Magento\CatalogRule\Model\Indexer\Product\ProductRuleIndexer" shared_index="catalogrule">
        <title translate="true">Catalog Product Rule</title>
        <description translate="true">Indexed product/rule association</description>
    </indexer>
    <indexer id="catalog_product_price">
        <dependencies>
            <indexer id="catalogrule_rule" />
        </dependencies>
    </indexer>
</config>