What Does This Approvals Error from a Classic Approval Process Mean?

Important Try Flow Approval Processes, a modern alternative to Classic Approval Processes. This new feature provides a more flexible, user-friendly flow-based interface, and it can trigger on record changes, supporting Apex extensibility and detailed logging for compliance and audit trails. It supports dynamic routing based on data and business rules, unlike Classic Approval Processes, which are tied to specific objects and offer limited support for processes by using conditions. With Flow Approval Processes, you can monitor submitted records and quickly identify bottlenecks, giving you unprecedented visibility into approval workflows. And, like Classic Approval Processes, Flow Approval Processes don’t consume automation credits or orchestration runs.

Note Salesforce doesn’t check whether field updates pass custom validation rules on fields.