Constraint report

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This special page performs constraint checks on any entity you want. The entities are fetched from the live system, so every constraint violation you fix there will be instantly removed from this list.

The constraints are parsed from statements on properties each time those statements are edited, usually within a few minutes.

Check constraints for entity

Result for nucleon (Q102165)

: 1, : 3, : 1, : 793, : 3, : 17, : 1

StatusPropertyMessageConstraint
archive URL/^(?:https?:\\/\\/(web\.archive\.org\\/(web\\/[0-9if_]{14,17})?\*?\\/https?:\\/|archive\.org\\/(details|download)|archive\.(today|is|fo|li|ph|vn)\\/[0-9]{4}[.-]?[0-9]{2}[.-]?[0-9]{2}[.-]?[0-9]{2}[.-]?[0-9]{2}[.-]?[0-9]{2}|webrecorder\.io|(www\.)?webcitation\.org|perma\.cc|perma\-archives\.org|([^\\/] \.)?megalodon\.jp|warp\.da\.ndl\.go\.jp|archive\.wikiwix\.com|(webarchive|yourarchives)\.nationalarchives\.gov\.uk|(pandora|trove|webarchive|content\.webarchive)\.nla\.gov\.au|webarchive\.loc\.gov|media\.digitalarkivet\.no|arquivo\.pt|(swap|sul-swap-prod)\.stanford\.edu)\\/. |https?:\\/\\/archive\.(today|is|fo|li|md|ph|vn)\\/[a-zA-Z0-9]{4,})$/u is not a valid regular expression.format constraint
interactionelectromagnetic interaction should have a statement topic's main category.value-requires-statement constraint
decays toValues of decays to statements should be instances of one of the following classes (or of one of their subclasses), but zero currently isn't: value-type constraint
decays toThe property decays to should not be used in this location (as qualifier). The only valid location for this property is as main value.property scope constraint
ChEBI IDThis ChEBI ID statement is missing a qualifier mapping relation type.required qualifier constraint