---
title: Common Schema Errors: The Top Mistakes to Avoid
slug: schema errors list
---

### Guide
### Why Errors Hurt Visibility
Schema errors list includes the most frequent mistakes that cause AI assistants to ignore your data.

### Common Mistakes
- Invalid field nesting
- Incorrect date formatting
- Placeholder domains or test data
- Missing closing brackets

### Prevention
Running a schema errors list audit monthly keeps your structured data clean and assistant-friendly.