elasticsearch-js/docs/reference/api/IngestDocumentSimulationKeys.md

IngestDocumentSimulationKeys [interface-IngestDocumentSimulationKeys]

Name	Type	Description
_id	Id	Unique identifier for the document. This ID must be unique within the _index.
_index	IndexName	Name of the index containing the document.
_ingest	IngestIngest
_routing	string	Value used to send the document to a specific primary shard.
_source	Record<string, any>	JSON body for the document.
_version_type	VersionType
_version	SpecUtilsStringified<VersionNumber>