Actions: Unbound Constraint
This message indicates that an annotation property (matching *-input or *-output) was found on a non-Action resource. The behavior of these properties, outside of an Action, is undefined and should not be used.
Learn more from the official Potential Actions documentation.
Examples
WARNING service/schema-org#ActionsUnboundPropertyAnnotation
The *-input properties are only supported within Action classes.
WARNING service/schema-org#ActionsUnboundPropertyAnnotation
The *-output properties are only supported within Action classes.