# DefaultProperty

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

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

Struct for a default property.

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

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## Fields

| Field | Type | Number | Description |
|---|---|---|---|
| <a id="f-property_def"></a>`property_def` | `int32` | 1 | PropertyDef ID. |
| <a id="f-allow_retaining_previous_value"></a>`allow_retaining_previous_value` | `bool` | 2 | True if the user is allowed to use/retain previous value |
| <a id="f-type"></a>`type` | [`DefaultPropertyType`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.DefaultPropertyType/index.md) | 3 | Default property type. Values: `DEFAULT_PROPERTY_TYPE_UNDEFINED` (0), `DEFAULT_PROPERTY_TYPE_FIXED_VALUE` (1), `DEFAULT_PROPERTY_TYPE_FROM_HP_DSS_XML` (2), `DEFAULT_PROPERTY_TYPE_FROM_XML` (3), `DEFAULT_PROPERTY_TYPE_FROM_EMAIL` (4), `DEFAULT_PROPERTY_TYPE_FROM_EMAIL_HEADER` (5), `DEFAULT_PROPERTY_TYPE_FROM_OCR` (6), `DEFAULT_PROPERTY_TYPE_FROM_FILE_PROPERTY` (7), `DEFAULT_PROPERTY_TYPE_STATE_TRANSITION_TIME` (8). |
| <a id="f-data"></a>`data` | [`DefaultPropertyUnion`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.DefaultPropertyUnion/index.md) | 4 | The details as a union. |

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## Used in fields

- [`ActionSetProperties.properties`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ActionSetProperties/index.md#f-properties): Properties.
- [`ExternalLocation.object_properties`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExternalLocation/index.md#f-object_properties): The properties.