This keyword's value MUST be an array. This array MUST have at least one element.
Elements of the array MUST be objects. Each object MUST be a valid JSON Schema.
An instance validates successfully against this keyword if it validates successfully against at least one schema defined by this keyword's value.
Inline or referenced schema MUST be of a Schema Object and not a standard JSON Schema.
https://datatracker.ietf.org/doc/html/draft-wright-json-schema-validation-00#section-5.23
See Implementation
This keyword's value MUST be an array. This array MUST have at least one element.
Elements of the array MUST be objects. Each object MUST be a valid JSON Schema.
An instance validates successfully against this keyword if it validates successfully against at least one schema defined by this keyword's value.
Inline or referenced schema MUST be of a Schema Object and not a standard JSON Schema.