A user receives an error when running a mailing list report. What should the consultant check to troubleshoot the issue?

To troubleshoot the issue when a user receives an error while running a mailing list report, focusing on whether the user has the "View Reports in Public Folders" system permission is essential. This permission is necessary for users to access and run reports that are stored in public folders. If the user does not have this permission, they will likely encounter errors when attempting to access any report that falls under this category.

Having this permission enables users to view and run reports that are designed to include data from public folders, ensuring that they can generate and utilize the necessary reports for their work. Without appropriate permissions, any reporting or data visualizations that rely on these directories may yield error messages or inaccessible data, preventing the user from effectively utilizing the resource.

Access to the Apex Class for Manage Households, the status of the Campaign ID filter, or the role hierarchy regarding Households might be relevant considerations; however, they are less directly related to the fundamental ability to run public reports. Therefore, checking the system permission is the most immediate and relevant step for troubleshooting errors encountered with mailing list reports.