structured-data.dangling-id
JSON-LD refers to an object by "@id" that no object on the page defines, so a reader of this page gets the id and none of the object's properties.
What to change
Define the object on every page that refers to it: put it in the same @graph with its @id, @type and properties (an article's author or publisher, for example), or write the properties inline instead of {"@id": ...}.
The documentation on developers.google.comA finding of this rule on a page carries the exact edits for that page: the markup it quotes, and what to write instead.
When it runs
Runs on every SEO audit: of a page, a crawl, a build directory or HTML. Info is a best practice: worth doing, rarely urgent, and --no-info leaves it out. Each finding takes 1 point off the page's score.
The severity here is the rule's usual one: a finding can be raised or lowered when the page gives a reason.
Run it, or skip it
Check a page for this rule alone, after a fix for instance:
npx @rivi-software/agentic-seo-check audit https://example.com --rule structured-data.dangling-idOr from an assistant, with the MCP tool seo_audit_page:
{
"url": "https://example.com",
"rules": [
"structured-data.dangling-id"
]
}To leave it out of an audit, pass --disable structured-data.dangling-id on the command, or disableRules: ["structured-data.dangling-id"] to a tool.
More in Structured data
All 14 rules- Info
structured-data.missing-recommendedA structured data item is missing properties Google recommends for richer results. - Warning
structured-data.invalid-dateDate properties in structured data that are not ISO 8601. - Info
structured-data.retired-typeThe page has structured data for a rich result Google no longer shows: FAQPage, HowTo, SpecialAnnouncement, ClaimReview, the sitelinks search box's SearchAction, Estimated Salary (Occupation), Learning Video (LearningResource on a VideoObject) or Book Actions (ReadAction, BorrowAction on a Book). - Warning
structured-data.invalid-valueA structured data value is in a form Google cannot use: a price with a currency symbol or a decimal comma, a currency that is not an ISO 4217 code, a rating outside its scale, a breadcrumb trail with fewer than two items, odd positions or crumbs without a URL, or an availability, itemCondition, eventStatus, eventAttendanceMode or employmentType that is not one of the values Google lists. - Info
structured-data.relative-urlA URL in JSON-LD (url, image, logo, item, sameAs, ...) is relative. JSON-LD does not resolve these properties against the page URL, and Google documents only absolute URLs. - Warning
structured-data.paywall-invalidPaywalled content markup Google cannot use: isAccessibleForFree is false but hasPart names no paywalled section, or the section's cssSelector is not a .class selector (warning); no element in the HTML has that class (info). Without it, Google cannot tell a paywall from cloaking. - Info
structured-data.self-serving-reviewAn Organization or LocalBusiness on its own site carries aggregateRating or review markup about itself. Google shows no review stars for such self-serving reviews, also when a widget adds them. - Info
structured-data.site-name-missingThe home page has structured data but no WebSite item, which Google reads first for the site name it shows in search results.