# Document Fields

The following fields are added to a document by connectors:

Field | Description
--- | ---
`AUTN_IDENTIFIER` | An identifier that allows a connector to extract the document from the repository again, for example during the collect or view actions. For more information about the identifier, see AUTN_IDENTIFIER.
`DocTrackingId` | An identifier used for document tracking functionality.
`DREREFERENCE` | A reference for the document. This is the standard IDOL reference field, which is used for deduplication.
`source_connector_run_id` | (Added only when `IngestSourceConnectorFields=TRUE`). The asynchronous action token of the `fetch` action that ingested the document.
`source_connector_server_id` | (Added only when `IngestSourceConnectorFields=TRUE`). A token that identifies the instance of the connector that retrieved the document (different installations of the same connector populate this field with different IDs). You can retrieve the UID of a connector through `action=GetVersion`.

The following fields are added to a document during ingestion:

Field | Description
--- | ---
`DocumentAttributes` | KeyView document attributes.
`DocumentClass` | The KeyView document class.
`DocumentSize` | The size of the document.
`DocumentType` | A number that represents the program that created the file format.
`DRECHILDCOUNT` | The number of sub-files that the document contains.
`DREDBNAME` | The name of the IDOL database that the document must be indexed to.
`DREFILENAME` | The file name of the original document.
`DREORIGINALNAME` | The original file name passed to CFS. This is the full path for extracted sub-files.
`DREROOTFAMILYREFERENCE` | The parent document for the family of documents.
`DREROOTFAMILYREFERENCE_ID` | A unique hash for the family of documents.
`FAMILYSORT` | A field used to track families (that is, containers) of documents. It contains a hash unique to the family, with indices appended that describe the depth and number of attachments.
`ImportErrorDescription` | If an error occurs when a document is processed, a description of the error is written to this field.
`ImportMagicExtension` | The file extension of the detected document type.
`ImportOriginalEncoding` | The detected encoding used by the document.
`ImportVersion` | Internal version number.
`InfoFlag` | A KeyView Flag that describes the file type (External, Embedded and so on). 0 = default 1 = This sub file needs further extraction 2 = This sub file is protected 4 = This sub file is an external file 8 = This sub file is a mail item attachment 16 = This sub file is SMIME protected
`KeyviewVersion` | The version of KeyView that CFS was released with.
`UUID` | A unique identifier for the document.
`VersionNumber` | The version of CFS that was used to import the document.

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