# EntityRef A reference to an Entity associated with produced telemetry. **Type**: `object` ## Properties - name: descriptionKeys (optional) type: array of string description: Descriptive (non-identifying) attribute keys of the entity. MAY change over the lifetime of the entity. - name: idKeys (optional) type: array of string description: Attribute Keys that identify the entity. MUST not change during the lifetime of the entity. - name: schemaUrl (optional) type: string description: The Schema URL, if known. This is the identifier of the Schema that the entity data is recorded in. - name: type (optional) type: string description: Defines the type of the entity. MUST not change during the lifetime of the entity.