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Checks for sitemap URLs returning 4XX status codes
Rule IDcrawl/sitemap-4xx
CategoryCrawlability
ScopeSite-wide
Severitywarning
Weight6/10

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Solution

Sitemaps should only list URLs that return 200 and are intended for indexing. Remove 4XX URLs from the sitemap or fix them by restoring the content or redirecting to a valid page. Keep sitemap entries clean to avoid wasting crawl budget.

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Enable / Disable

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Disable this rule

squirrel.toml
[rules]
disable = ["crawl/sitemap-4xx"]

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Disable all Crawlability rules

squirrel.toml
[rules]
disable = ["crawl/*"]

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Enable only this rule

squirrel.toml
[rules]
enable = ["crawl/sitemap-4xx"]
disable = ["*"]