Which of the following actions is NOT part of working with Scratch Orgs?

Creating production environments is not part of working with Scratch Orgs. Scratch Orgs are temporary Salesforce environments designed for development and testing purposes. They allow developers to quickly set up a clean environment for their work, which includes committing changes to custom objects, managing metadata, and utilizing User Story Operations to streamline development processes.

In contrast, production environments are stable instances that host the live version of an application and are not intended for experimental development activities such as those performed in Scratch Orgs. The primary function of a Scratch Org is to facilitate agile development, which emphasizes rapid iteration and testing rather than engaging in the management of production-level environments.

The other choices relate directly to typical tasks associated with Scratch Orgs. Committing changes to custom objects involves version control and ensuring that all changes are tracked and merged properly. Reviewing metadata load errors is critical for diagnosing issues in deployments. Using User Story Operations helps in organizing development tasks according to user stories, thus enhancing collaboration and project management within the Scratch Org context.