- Class
- C4 Informational
- Weight
- 0
- Severity on fail
- info
- Applies to
Scope and evidence
Evaluated on site. The book marks this requirement SEARCH-ENGINE-SPECIFIC.
Observations
Each condition has a stable code and a reason template. The evaluator fills the placeholders from observed values only; no sentence in a report is generated.
server_errors{n} URLs returned server errors or 429 during this scan, for example {examples}. Google's crawlers slow down on these responses, and already indexed URLs are eventually dropped. A single scan cannot tell whether an error is persistent.
Sources, quoted
These are the passages the rule rests on, stored once in the knowledge base and emitted exactly as written. A citation marked for specific conditions appears only on findings with those codes.
“5xx and 429 server errors prompt Google's crawlers to temporarily slow down with crawling. For Google Search, already indexed URLs are preserved in the index, but eventually dropped.”
[G-HTTP] How HTTP status codes, and network and DNS errors affect Google Search · 5xx (server errors) · last updated 2026-02-04
https://developers.google.com/crawling/docs/troubleshooting/http-status-codes