Meta catalog diagnostics vs feed upload errors

Meta exposes more than one diagnostic channel. Feed ingestion errors and catalog diagnostics use different severity names and can appear at different times.

Common causes

• Upload/feed errors describe ingestion failures.
• Catalog diagnostics can appear after processing or distribution begins.
• Messages can be localized while machine error types remain stable.

What to check first

1. Review upload errors and catalog diagnostics separately.
2. Use stable error types instead of matching translated message text.
3. Retest after a Shop or distribution surface becomes active.

How to resolve it

1. Fix source product data for item-level problems.
2. Record unknown machine keys for classification.
3. Do not declare the catalog clean from one empty endpoint or screen.