Troubleshoot URL Discovery in LLMIC

A product page opens when you paste its URL into a browser, but a crawl from the category page never reaches it. The destination may be healthy. The missing piece may be the relationship that introduces it: a link, a sitemap entry or the input itself.

Troubleshoot URL discovery in LLMIC by testing one source-to-destination relationship at a time. First establish whether the destination can be inspected directly. Then investigate how the original run was supposed to encounter it. This separates an unavailable page from an unavailable route to that page.

Choose One Missing Destination and Its Expected Source

Write down the exact destination URL and the page or inventory that should introduce it. “Some products are missing” is too broad for a first diagnostic test. “This category should link to this product, but the linked run omitted it” gives you two concrete addresses to inspect.

Preserve the original crawl and input settings. Record the seed, input mode, depth, page ceiling and whether the run completed. If you change the website before saving the original evidence, you may lose the observation needed to explain the problem.

Choose a representative missing case rather than the most complicated one. If many missing products share a category template, inspect one ordinary product and one ordinary category first. Keep unusual redirects or authenticated routes as separate cases unless they are the actual subject of the investigation.

Test the Destination Without the Discovery Route

Use URL List to supply the missing destination directly. Open the URL-count control, enter the complete URL and finish the list edit before running the check. Keep the access and rendering conditions comparable to the original investigation.

If the direct check yields the intended content, focus on the source route. If it fails or returns unexpected content, inspect that result before changing navigation. A new internal link cannot repair a destination that is unavailable under the test’s conditions.

Check the precise response and destination. An address that redirects to the homepage has not necessarily delivered the expected product page. A login or challenge screen is also different from the intended content, even if a browser session used by an administrator behaves differently.

Inspect the Source, Then the Link

Confirm that the original crawl actually observed the source page. If it did not, move one step earlier in the route. A missing category page can explain why its products were never discovered, so inspecting every product link first may duplicate work.

On an observed source, locate the link that should lead to the destination. Check its actual href, not just the words or image visitors click. A relative address can resolve somewhere unexpected, and an old hostname or path can send the investigation away from the intended page.

Google’s link guidance recommends an anchor element with a usable href for crawlable navigation. Script-only click handlers, empty anchors and interface controls that do not expose a normal destination need closer inspection. Do not infer link markup merely from the fact that a mouse click works.

Separate Rendering From Interaction

A link added during rendering differs from a link revealed only after a particular interaction. Record whether the route depends on a dropdown, pagination control, search form or another state. Then compare that requirement with what the crawl actually observed.

Use the rendering settings appropriate to a focused test when the source depends on JavaScript. Do not claim that enabling rendering reproduces every possible click, login state or user journey. The useful question is whether this specific source exposes this specific destination under the tested conditions.

If the page has many categories or filters, inspect the path readers are intended to use rather than generating every possible combination. An investigation that expands into an uncontrolled set of parameterized URLs can obscure the original missing route.

Follow the Evidence to the Right Repair

Diagnostic result	Likely next investigation	Repair to avoid assuming
Destination fails when supplied directly	Delivery, redirect or access behavior	Adding another link as the complete solution
Source was absent from the original run	Earlier route and crawl boundary	Editing every link on the unobserved source
Source appears but its href is wrong	Published link target	Increasing the page ceiling
Link appears only after rendering	Source content under the chosen rendering mode	Calling the destination deleted
URL is missing from the supplied sitemap	Sitemap inventory and publication rules	Treating linked navigation as proof of sitemap inclusion
Run reached a limit before the route completed	Scope and completion state	Declaring the website fully investigated

These are starting points, not automatic diagnoses. Record the observation that supports the chosen branch and retain alternatives when the evidence is incomplete. A reviewer should be able to understand why the proposed fix follows from the test.

Worked Example: A Category Card With the Wrong Target

This example is illustrative. A shop’s category page displays a card for a new product. The product loads correctly in a direct URL List check, but the linked investigation does not reach its intended address.

The reviewer confirms the category page was observed, then inspects the card’s destination. Its href still points to an older product address. The visible card label had been updated, but the destination had not. The old address leads to a different page, so increasing crawl depth would not solve the actual problem.

The repair ticket names the category source, the current href and the approved replacement URL. After the link is changed, the reviewer repeats the linked route from the same category and checks the resulting destination content. The direct test remains useful evidence of availability, but the linked retest is what verifies the navigation repair.

The conclusion concerns this card and route. If the same template generates other cards, review a representative sample and the underlying publishing logic before claiming that every product link is fixed.

Write a Diagnostic Handoff That Can Be Repeated

Include the seed, source URL, expected destination, observed destination, relevant settings and the first failing step. Add a short description of the direct test and the linked test, keeping their conclusions separate.

If the cause is still unknown, say what evidence is needed next. For example, a developer may need to inspect the rendered source, a content editor may need to confirm the intended sitemap entry, or an operator may need a completed run with an appropriate boundary.

Use Verify Changes to URL Discovery in LLMIC to turn the diagnosis into an acceptance test. For a boundary issue rather than a link problem, consult Troubleshoot Crawl Scope in LLMIC before changing unrelated website content.

Questions About Discovery Failures

Why does adding the URL directly make it appear?

Direct input bypasses the route through which the original run needed to discover the page. It can confirm availability under the tested conditions without proving that navigation exposes the address.

Should I inspect the destination or the source first?

Use a small direct check to establish the destination’s behavior, then confirm the source was observed. Inspect the link relationship once both ends are understood.

Does a clickable card always contain a crawlable link?

No. Inspect the destination markup. A script event can make a card interactive without supplying the same evidence as a normal anchor with a usable href.

Can rendering solve every missing-link problem?

No. Rendering may reveal content generated by JavaScript, but it cannot correct an incorrect href, an absent sitemap entry or an unsuitable input list. It also does not establish that every user interaction was reproduced.

What if the source page is missing too?

Move backward toward the seed and find the earliest unobserved step. Investigating that gap is usually more informative than editing links on a page the run never reached.

Should I repair all similar links after one example?

Confirm the shared mechanism first. Inspect representative cases and the template or publishing rule responsible. One example supports a targeted diagnosis, not an unqualified site-wide conclusion.

How do I prove the repair worked?

Repeat the route that originally failed with comparable settings. Confirm the intended destination is discovered and returns the expected content, then inspect related routes for regressions.

Sources, Statistics and Measurement Notes

The category-card scenario is illustrative, not a customer case study. The diagnostic sequence uses LLMIC’s verified input modes and analyst inspection of source-and-destination relationships. It does not imply automatic interaction with every navigation state.

Google’s link best practices and JavaScript SEO basics, accessed 5 October 2026, provide background on link extraction and rendering. Google-specific behavior is not a guarantee about another crawler’s implementation.