> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/infrastructure-as-code-management/iacm-api-reference/workspaces/roll-back-workspace-state-to-a-previous-version.md).

# Roll back workspace state to a previous version

Copies a historical state file to a new version and sets the workspace state pointer to it. Blocked when a pipeline execution is in flight.

```json
{"openapi":"3.0.3","info":{"title":"Infrastructure as Code Management","version":"0.1.0"},"tags":[{"name":"workspaces","description":"Workspaces Service handles the API for managing workspaces\nand triggering workflows against them."}],"servers":[{"url":"http://localhost:80"}],"paths":{"/api/orgs/{org}/projects/{project}/workspaces/{workspace}/state-versions/{data_id}/rollback":{"post":{"tags":["workspaces"],"summary":"Roll back workspace state to a previous version","description":"Copies a historical state file to a new version and sets the workspace state pointer to it. Blocked when a pipeline execution is in flight.","operationId":"workspaces#rollback-state","parameters":[{"name":"org","in":"path","description":"Org is the organisation identifier.","required":true,"schema":{"type":"string","description":"Org is the organisation identifier.","minLength":1,"maxLength":128}},{"name":"project","in":"path","description":"Project is the project identifier.","required":true,"schema":{"type":"string","description":"Project is the project identifier.","minLength":1,"maxLength":128}},{"name":"workspace","in":"path","description":"Workspace identifier","required":true,"schema":{"type":"string","description":"Workspace identifier"}},{"name":"data_id","in":"path","description":"The unique identifier of the state version to roll back to","required":true,"schema":{"type":"string","description":"The unique identifier of the state version to roll back to","format":"uuid"}},{"name":"Harness-Account","in":"header","description":"Account is the internal customer account ID.","allowEmptyValue":true,"required":true,"schema":{"type":"string","description":"Account is the internal customer account ID.","minLength":1,"maxLength":128}}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/RollbackStateRequest"}}}},"responses":{"200":{"description":"OK response.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/RollbackStateResponse"}}}},"400":{"description":"BadRequestError: Bad Request response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"401":{"description":"UnauthorizedError: Unauthorized response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"403":{"description":"ForbiddenError: Forbidden response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"404":{"description":"NotFoundError: Not Found response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"408":{"description":"TimeoutError: Request Timeout response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"409":{"description":"ConflictError: Conflict response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"423":{"description":"LockedError: Locked response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"499":{"description":"ContextCancelledError:  response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"500":{"description":"InternalServerError: Internal Server Error response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}},"502":{"description":"BadGatewayError: Bad Gateway response.","content":{"application/vnd.goa.error":{"schema":{"$ref":"#/components/schemas/Error"}}}}}}}},"components":{"schemas":{"RollbackStateRequest":{"type":"object","properties":{"rollback_reason":{"type":"string","description":"Optional human-readable reason for the rollback"}}},"RollbackStateResponse":{"type":"object","properties":{"activity_id":{"type":"string","description":"The unique identifier of the audit activity record","format":"uuid"},"new_data_id":{"type":"string","description":"The unique identifier of the new state version created by the rollback","format":"uuid"},"new_file_version":{"type":"integer","description":"The file version timestamp (microseconds) of the new state object","format":"int64"}},"required":["new_data_id","new_file_version","activity_id"]},"Error":{"type":"object","properties":{"fault":{"type":"boolean","description":"Is the error a server-side fault?"},"id":{"type":"string","description":"ID is a unique identifier for this particular occurrence of the problem."},"message":{"type":"string","description":"Message is a human-readable explanation specific to this occurrence of the problem."},"name":{"type":"string","description":"Name is the name of this class of errors."},"temporary":{"type":"boolean","description":"Is the error temporary?"},"timeout":{"type":"boolean","description":"Is the error a timeout?"}},"required":["name","id","message","temporary","timeout","fault"]}}}}
```