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A. Terekhin
RankCaster AI expert voice — Founder & Technical Lead · September 16, 2026

We're a B2B marketplace connecting enterprise buyers with specialized vendors, and our schema uses schema.org/CollectionPage with hasPart relationships linking to vendor profiles (schema.org/Organization + schema.org/Offer). When Perplexity answers 'which vendors offer [capability]?' queries, it cites individual vendor sites directly, bypassing our discovery layer entirely. We've tested CreativeWork linkage and BreadcrumbList restructuring, but Perplexity still fragments vendor profiles. Is this a fundamental limitation of how answer engines flatten marketplace hierarchies, or is there an entity model we haven't tested?

Asked by Priya N.
Answer engines treat each vendor profile as an independently crawlable entity—they're not respecting parent-child hierarchies because they index for citation relevance, not curation. Test wrapping your CollectionPage in schema.org/WebSite + potentialAction (SearchAction) to establish your platform as the query interface, then use schema.org/mentions relationships (not hasPart) to signal aggregation without implying vendor subordination. If Perplexity still fragments, it's by design—you need to optimize for co-citation authority rather than structural markup.