Error messages are critical alerts that indicate serious conditions requiring immediate action in Connect CDC (SQData). You can identify these messages by the E suffix in their message codes. Unlike warning messages, error messages stop processing and prevent the system from continuing normal operations. Error messages are used to notify you of failures, invalid configurations, resource unavailability, or other critical issues that must be resolved before processing can resume. By promptly addressing error messages, you can restore system functionality and prevent data loss or corruption.