# ExportedDataHistoryStartDateMode

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Reference](https://developer.m-files.com/APIs/gRPC-API/Reference/index.md) > [Enums](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.ExportedDataHistoryStartDateMode/

Enumeration of history start date modes for exported data nodes.

- **Full name:** `MFiles.ExportedDataHistoryStartDateMode`
- **Proto file:** [`mfiles/enums.proto`](https://developer.m-files.com/APIs/gRPC-API/downloads/proto/mfiles/enums.proto)

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## Values

| Name | Number | Description |
|---|---|---|
| <a id="v-EXPORTED_DATA_HISTORY_START_DATE_MODE_FULL_HISTORY"></a>`EXPORTED_DATA_HISTORY_START_DATE_MODE_FULL_HISTORY` | 0 | History begins at object creation. |
| <a id="v-EXPORTED_DATA_HISTORY_START_DATE_MODE_FIXED_PERIOD"></a>`EXPORTED_DATA_HISTORY_START_DATE_MODE_FIXED_PERIOD` | 1 | Start date is calculated; x days/weeks/months/years before end date. |
| <a id="v-EXPORTED_DATA_HISTORY_START_DATE_MODE_STARTING_FROM"></a>`EXPORTED_DATA_HISTORY_START_DATE_MODE_STARTING_FROM` | 2 | The start date is a exact date. |

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## Used in fields

- [`ExportedDataPropertyDef.history_mode`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExportedDataPropertyDef/index.md#f-history_mode): The mode how the history start date is expressed.