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.

Result for Portrait of an Old Man (Q21504361)

: 1, : 1, : 710, : 32, : 2

StatusPropertyMessageConstraint
depicts Iconclass notationThe value for depicts Iconclass notation (61B:31D14) should match the regex \d{1,2}(([A-IK-Z])\2?\d{0,5})?(\([\p{L}0-9. -]+[\p{L}0-9&., ':-]*\))?\d{0,4}(\(\+\d{1,5}\))?.format constraint
described at URLThis described at URL statement is missing a qualifier language of work or name.required qualifier constraint