# IRPCVault.GetMetadataStructureItemIdsFromMDCardConfiguration

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Vault API](https://developer.m-files.com/APIs/gRPC-API/vault/index.md) > [Vault information](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCVault/index.md)

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

Badges: `Vault API / core` `write` `session or assertion` `returns metadata structure version`

Gets metadata structure item IDs and related aliases or GUIDs which are used in Metadata card configuration value. Created for HttpServer.

- **Service:** [Vault information](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCVault/index.md) `MFiles.IRPCVault`
- **gRPC method:** `/MFiles.IRPCVault/GetMetadataStructureItemIdsFromMDCardConfiguration`
- **HTTP (mf-http-grpc):** `POST /grpc/v1/get-metadata-structure-item-ids-from-mdcard-configuration`
- **Request:** [`GetMetadataStructureItemIdsFromMDCardConfigurationRequest`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCVault/GetMetadataStructureItemIdsFromMDCardConfiguration/index.md#request)
- **Response:** [`GetMetadataStructureItemIdsFromMDCardConfigurationResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCVault/GetMetadataStructureItemIdsFromMDCardConfiguration/index.md#response)
- **Book and level:** Vault API, core
- **Kind:** write
- **Session:** Required: a session (mfiles-session-id-bin metadata) or a session assertion (x-mf-session-assertion metadata).
- **Idempotent:** no
- **Returns metadata structure version:** yes (in the mfiles-metadata-version-bin trailer)
- **Streaming:** none (unary)

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## Remarks

Used by M-Files clients to resolve the aliases and GUIDs that the vault's metadata card
configuration refers to. Returns UTF-8 JSON that maps item kinds to alias-or-GUID-to-ID pairs
(`{}` when there are none). Applications rarely need it.

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## Request: GetMetadataStructureItemIdsFromMDCardConfigurationRequest

No fields.

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## Response: GetMetadataStructureItemIdsFromMDCardConfigurationResponse

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `item_ids` | `bytes` | Receives the output object. |

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## Related methods

- [GetMetadataStructure](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCVault/GetMetadataStructure/index.md): Gets the vault's real object types (not value lists), with icons, in one call.