1. Valid JSON is not the same as valid schema.
A parser can accept well-formed JSON while the graph still references the wrong entities, omits required properties, or uses values that do not match the visible page.
2. Schema.org-valid does not equal search-feature eligible.
Rich result eligibility depends on policy, page type, and visible content alignment—not vocabulary compliance alone.
3. Markup can become stale after content changes.
CMS edits, pricing updates, and template refactors can leave deployed JSON-LD describing a page that no longer exists.
4. Reused business entities reduce inconsistency.
Central entity libraries keep Organization, LocalBusiness, and Product facts aligned across templates.
5. Monitoring turns schema into an operational process.
Continuous monitoring detects drift, opens issues, and gives teams a workflow instead of one-off audits.
Audit a site for schema drift — run a free audit from your dashboard after signup.