What is Structured Data Validation?Checking schema markup for correctness and eligibility for rich results.Why is Structured Data Validation important?Key reasons include: Prevents rich result errors and loss of visibility; Improves consistency across templates; Enhances machine understanding of pages.How do I implement Structured Data Validation?Start with: Use JSON-LD and validate in CI pipelines; Keep schema synchronized with on-page content; Monitor Search Console for warnings and errors.What are common mistakes with structured data validation?Common pitfalls include shallow execution, ignoring user intent, over-optimizing for narrow metrics, and failing to maintain consistency at scale.How does structured data validation affect SEO performance?Done correctly, it can improve relevance signals, sync efficiency, and internal authority flow, contributing to better visibility and engagement.