>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3400840. --> Reported by: [znerol](https://www.drupal.org/user/63999) Related to !11 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Symfony Messenger comes with a <a href="https://symfony.com/doc/current/messenger.html#handling-messages-synchronously">sync</a> transport. This is useful as a fallback or in cases where asynchronous delivery is undesired for specific message types.</p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Add a submodule which registers the <a href="https://github.com/symfony/symfony/blob/6.4/src/Symfony/Component/Messenger/Transport/Sync/SyncTransportFactory.php">SyncTransportFactory</a>.</p> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <h3 id="summary-ui-changes">User interface changes</h3> <h3 id="summary-api-changes">API changes</h3> <h3 id="summary-data-model-changes">Data model changes</h3>