Defines a constraint across the properties you include.

You can use constraints to enforce that;

  • Certain properties must be present,
  • A value must be unique across a single or several properties.

A 'uniqueness' constraint can only apply to properties that are in the same container. Up to 10 'uniqueness' constraints can be added per container.

A 'requires' constraint can reference other containers. As a result, the properties in those other containers must then also be set. Up to 25 'requires' constraints can be added per container.