When adding a configuration for custom account number length, the system shows a warning about the date format being sent with an incorrect value. The date picker was sending dates in ISO format but the backend expected them formatted according to the dateFormat setting. Changes: - Import and use Dates.formatDate service for consistent date formatting - Format dates according to the user's dateFormat setting before sending to backend - Date values are now formatted as strings matching the dateFormat pattern - Includes locale and dateFormat in the payload for proper backend processing