# constraintProperty - Schema.org Property

> Source: https://schema.org/constraintProperty
> Extracted: 2026-02-16T16:10:26.275Z

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A Schema.org Property

*This term is in the "new" area - implementation feedback and adoption from applications and websites can help improve our definitions.*

Indicates a property used as a constraint. For example, in the definition of a [StatisticalVariable](https://schema.org/StatisticalVariable). The value is a property, either from within Schema.org or from other compatible (e.g. RDF) systems such as DataCommons.org or Wikidata.org.

#### Source

[https://github.com/schemaorg/schemaorg/issues/2291](https://github.com/schemaorg/schemaorg/issues/2291)