# IRPCDeclarativeMetadataStructure.NewDeclarativeMetadataStructureRevisionAvailable

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Administration API](https://developer.m-files.com/APIs/gRPC-API/admin/index.md) > [Declarative metadata structure](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCDeclarativeMetadataStructure/index.md)

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

Badges: `Administration API / specialized` `admin` `session` `returns metadata structure version`

Reserved for telling the server that a new structure revision is available. Not implemented.

- **Service:** [Declarative metadata structure](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCDeclarativeMetadataStructure/index.md) `MFiles.IRPCDeclarativeMetadataStructure`
- **gRPC method:** `/MFiles.IRPCDeclarativeMetadataStructure/NewDeclarativeMetadataStructureRevisionAvailable`
- **HTTP (mf-http-grpc):** `POST /grpc/v1/new-declarative-metadata-structure-revision-available`
- **Request:** [`NewDeclarativeMetadataStructureRevisionAvailableRequest`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCDeclarativeMetadataStructure/NewDeclarativeMetadataStructureRevisionAvailable/index.md#request)
- **Response:** [`NewDeclarativeMetadataStructureRevisionAvailableResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCDeclarativeMetadataStructure/NewDeclarativeMetadataStructureRevisionAvailable/index.md#response)
- **Book and level:** Administration API, specialized
- **Kind:** admin
- **Session:** Required: the session ID from LogIn in the mfiles-session-id-bin metadata.
- **Idempotent:** no
- **Returns metadata structure version:** yes (in the mfiles-metadata-version-bin trailer)
- **Streaming:** none (unary)

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## Remarks

- Always fails with "Not implemented.", whether or not the feature is enabled.

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## Request: NewDeclarativeMetadataStructureRevisionAvailableRequest

No fields.

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## Response: NewDeclarativeMetadataStructureRevisionAvailableResponse

No fields.