Reference
Triggering Salesforce flows from Pendula objects

If you plan to use Salesforce flows to perform an action when a Pendula object is created or updated, we recommend using the Run Asynchronously option.

This will prevent potential conflicts between the actions running on the Pendula objects, and those in your Salesforce flow.

You can enable this option by selecting the checkbox at the bottom of the page when creating a new Salesforce flow.