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 Nguyễn Phúc Đoan Thận (Q65058674)

: 1, : 2, : 1022

StatusPropertyMessageConstraint
posthumous nameThis posthumous name statement is missing a qualifier writing system.required qualifier constraint
date of birthStatements for date of birth should have at least one reference.citation-needed constraint
date of deathStatements for date of death should have at least one reference.citation-needed constraint