-|additionalOptions|[microsoft.graph.security.additionalOptions](../resources/security-ediscoverysearchexportoperation.md#additionaloptions-values)| The additional items to include in the export. The possible values are: `none`, `teamsAndYammerConversations`, `cloudAttachments`, `allDocumentVersions`, `subfolderContents`, `listAttachments`, `unknownFutureValue`, `htmlTranscripts`,`advancedIndexing`, `allItemsInFolder`, `includeFolderAndPath`, `condensePaths`, `friendlyName`, `splitSource`, `optimizedPartitionSize`, `includeReport`. Use the `Prefer: include-unknown-enum-members` request header to get the following values from this [evolvable enum](/graphs/best-practices-concept#handling-future-members-in-evolvable-enumerations): `htmlTranscripts`,`advancedIndexing`, `allItemsInFolder`, `includeFolderAndPath`, `condensePaths`, `friendlyName`, `splitSource`, `optimizedPartitionSize`, `includeReport`.|
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