# PropertyDefDecl

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.PropertyDefDecl/

Property definition.

- **Full name:** `MFiles.PropertyDefDecl`
- **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-pd_admin"></a>`pd_admin` | [`PropertyDefAdmin`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.PropertyDefAdmin/index.md) | 1 | Property definition admin data. |
| <a id="f-icon"></a>`icon` | [`MetadataStructureResourceRef`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.MetadataStructureResourceRef/index.md) | 2 | Per-language translations. |
| <a id="f-translations"></a>`translations` | repeated [`ElementTranslationsDecl`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ElementTranslationsDecl/index.md) | 3 | Per-language translations. |
| <a id="f-automatic_numbering_code"></a>`automatic_numbering_code` | [`MetadataStructureResourceRef`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.MetadataStructureResourceRef/index.md) | 4 | The automatic numbering VBScript resource reference. |
| <a id="f-calc_with_vbscript"></a>`calc_with_vbscript` | [`MetadataStructureResourceRef`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.MetadataStructureResourceRef/index.md) | 5 | The calculated-value VBScript resource reference. |
| <a id="f-validation_code"></a>`validation_code` | [`MetadataStructureResourceRef`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.MetadataStructureResourceRef/index.md) | 6 | The validation VBScript resource reference. |
| <a id="f-unknown_json"></a>`unknown_json` | `string` | 7 | Opaque JSON object of schema-recognized, converter-unmapped properties for this element, keyed by original property name. |

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## Used in fields

- [`DeclarativeMetadataStructure.property_defs`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.DeclarativeMetadataStructure/index.md#f-property_defs): An array of the PropertyDefDecl structures.