The value of "unevaluatedItems" MUST be a valid JSON Schema.

The behavior of this keyword depends on the annotation results of adjacent keywords that apply to the instance location being validated. Specifically, the annotations from "items" and "additionalItems", which can come from those keywords when they are adjacent to the "unevaluatedItems" keyword. Those two annotations, as well as "unevaluatedItems", can also result from any and all adjacent in-place applicator keywords. This includes but is not limited to the in-place applicators defined in this document.

If an "items" annotation is present, and its annotation result is a number, and no "additionalItems" or "unevaluatedItems" annotation is present, then validation succeeds if every instance element at an index greater than the "items" annotation validates against "unevaluatedItems".

Otherwise, if any "items", "additionalItems", or "unevaluatedItems" annotations are present with a value of boolean true, then "unevaluatedItems" MUST be ignored. However, if none of these annotations are present, "unevaluatedItems" MUST be applied to all locations in the array.

This means that "items", "additionalItems", and all in-place applicators MUST be evaluated before this keyword can be evaluated. Authors of extension keywords MUST NOT define an in-place applicator that would need to be evaluated before this keyword.

If the "unevaluatedItems" subschema is applied to any positions within the instance array, it produces an annotation result of boolean true, analogous to the single schema behavior of "items". If any "unevaluatedItems" keyword from any subschema applied to the same instance location produces an annotation value of true, then the combined result from these keywords is also true.

Omitting this keyword has the same assertion behavior as an empty schema.

Implementations that do not collect annotations MUST raise an error upon encountering this keyword.