newsupernova/vendor/vertex/module-tax/etc/webapi_rest/di.xml

<?xml version="1.0"?>
<!--
  @copyright  Vertex. All rights reserved.  https://www.vertexinc.com/
  @author     Mediotype                     https://www.mediotype.com/
  -->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Vertex\Tax\Model\ErrorMessageDisplayState">
        <arguments>
            <argument name="enabled" xsi:type="boolean">true</argument>
        </arguments>
    </type>
</config>