---
title: "Get a specific version of a dataset."
method: GET
path: "/api/Dataset/{datasetId}/history/{versionNumber}"
tags: ["Dataset Management"]
---

# Get a specific version of a dataset.

`GET /api/Dataset/{datasetId}/history/{versionNumber}`

Returns a specific version of a dataset by version number.

## Path parameters

- `datasetId` string, required
- `versionNumber` integer, required

## Response `200`

OK

- DatasetVersionResponseModel — A single entry in the dataset version history.
  - `versionNumber` integer
  - `createdDate` Instant — A point in time represented as an ISO 8601 timestamp string.
  - `user` UserEntityModel — A user entity with basic identity information.
    - `id` string, required — The unique identifier of the user or group.
    - `userName` string, nullable, required — The display name of the user or group.
    - `firstName` string, nullable — The user's first name.
    - `lastName` string, nullable — The user's last name.
  - `changeDescription` string
  - `summary` DatasetVersionChangeSummary[]
    - `fields` string[] — The field(s) that changed. A single-element list for most changes, or multiple elements when a bulk operation applied the same value to many fields (e.g. GeneratorSetup keys all set to the same state).
    - `description` string — Human-readable description, e.g. "Renamed dataset from 'A' to 'B'"
    - `changeType` 'Details' | 'Output' | 'WordDocumentSettings' | 'PdfSettings' | 'DeidentificationSetting' | 'TagsUpdate' | 'SynthesisMetadataUpdate' | 'AllowListUpdate' | 'BlockListUpdate' | 'CustomPiiEntityActivation' | 'ModelBasedEntityActivation' | 'RtfSettings' | 'ConfidenceThresholdUpdate' | 'FormMappingUpdate'
    - `oldValue` string, nullable — Optional previous value for detailed display
    - `newValue` string, nullable — Optional new value for detailed display
  - `restoredFromVersion` integer, nullable
  - `isLatestVersion` boolean

## Other responses

- `404` — The dataset or version cannot be found

---

[API](https://skmtc.net/tonic/apis/textual-api.md) · [All operations](https://skmtc.net/tonic/apis/textual-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/tonic/textual-api/revisions/41da8739a690/schema)