# `IngestDocumentSimulationKeys` [interface-IngestDocumentSimulationKeys]

| Name | Type | Description |
| - | - | - |
| `_id` | [Id](./Id.md) | Unique identifier for the document. This ID must be unique within the `_index`. |
| `_index` | [IndexName](./IndexName.md) | Name of the index containing the document. |
| `_ingest` | [IngestIngest](./IngestIngest.md) |   |
| `_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](./VersionType.md) | &nbsp; |
| `_version` | [SpecUtilsStringified](./SpecUtilsStringified.md)<[VersionNumber](./VersionNumber.md)> | &nbsp; |