DreamHouse Realty has an approval process.

A common cause of errors in an Approval Process is a breakdown in the "Approver" chain. If an approval step is configured to route to a specific user or a manager who has been deactivated, Salesforce will throw an error when the current step tries to advance. The Platform Administrator should check the "Next Approver" field on the record or the step definition in Setup to ensure the target user is active and has a valid Salesforce license. While field visibility (Options B and C) is important for the user experience, missing field access typically doesn't "error out" the approval engine itself; it just prevents the user from seeing the data. Checking for inactive users is the first step in troubleshooting runtime errors in automated routing processes.