Table of contents
iModels
Download API definition:
GET https://api.bentley.com/imodels/{id}/changesets/extendeddata

Retrieves a list of extended Changeset data entries for the iModel specified by the iModel id.

Extended data is an application specific data associated to the Changeset. This data is not interpreted by the service. Extended data must be a valid json object encoded as base64 string.

Authentication

Requires Authorization header with valid Bearer token for scope itwin-platform.

For more documentation on authorization and how to get access token visit OAUTH2 Authorization page.

Authorization

User must have imodels_webview permission assigned at the iModel level. If iModel Role permissions at the iModel level are configured, then user must additionally have at least imodels_webview permission assigned at the iTwin level. If permissions at the iModel level are not configured, then user must have imodels_webview permission assigned at the iTwin level.

Alternatively the user should be an Organization Administrator for the Organization that owns a given iTwin the iModel belongs to.

For more information please refer to Account Administrator documentation section on Access Control API documentation page.

Rate limits

All iTwin Platform API operations have a rate limit. For more documentation on that visit Rate limits and quotas page.

Request parameters

Name
Required?
Description
id
Yes

iModel id

Request headers

Name
Required?
Description
Authorization
Yes

OAuth access token with itwin-platform scope

Accept
Yes

Setting to application/vnd.bentley.itwin-platform.v2+json is recommended.

Response 200 OK

OK

json
{
    "extendedData": [{
            "changesetId": "78c09f3337370b26acabead1790d77b2a6ebc6ee",
            "changesetIndex": 1,
            "data": "ewogICJkYXRhIjogewogICAgImNoYW5nZWRGaWxlcyI6IFsKICAgICAgIkEuZGduIiwKICAgICAgIkIuZGduIgogICAgXSwKICAgICJ0YXNrSWQiOiAiZGIxNGY4MzUtOGQxYy00YjU2LTkyMzUtNzE1ZWJkMjMzODE0IgogIH0KfQ=="
        },
        {
            "changesetId": "a1ecbdc8c4f6173004f9f881914a57c5511a362b",
            "changesetIndex": 2,
            "data": "ewogICJkYXRhIjogewogICAgImNoYW5nZWRGaWxlcyI6IFsKICAgICAgIkEuZGduIiwKICAgICAgIkIuZGduIgogICAgXSwKICAgICJ0YXNrSWQiOiAiZGIxNGY4MzUtOGQxYy00YjU2LTkyMzUtNzE1ZWJkMjMzODE0IgogIH0KfQ=="
        }
    ],
    "_links": {
        "self": {
            "href": "https://api.bentley.com/imodels/5e19bee0-3aea-4355-a9f0-c6df9989ee7d/changesets/extendeddata?$skip=100&$top=100"
        },
        "prev": {
            "href": "https://api.bentley.com/imodels/5e19bee0-3aea-4355-a9f0-c6df9989ee7d/changesets/extendeddata?$skip=0&$top=100"
        },
        "next": {
            "href": "https://api.bentley.com/imodels/5e19bee0-3aea-4355-a9f0-c6df9989ee7d/changesets/extendeddata?$skip=200&$top=100"
        }
    }
}

Response 401 Unauthorized

This response indicates that request lacks valid authentication credentials. Access token might not been provided, issued by the wrong issuer, does not have required scopes or request headers were malformed.

json
{
    "error": {
        "code": "HeaderNotFound",
        "message": "Header Authorization was not found in the request. Access denied."
    }
}

Response 404 Not Found

Specified iModel was not found.

json
{
    "error": {
        "code": "iModelNotFound",
        "message": "Requested iModel is not available."
    }
}

Response 422 Unprocessable Entity

The 422 (Unprocessable Entity) status code indicates that the request cannot be processed by the server due to a client error (e.g. malformed request syntax)

json
{
    "error": {
        "code": "InvalidiModelsRequest",
        "message": "Cannot get Changesets Extended Data.",
        "details": [{
            "code": "InvalidValue",
            "message": "'-1' is not a valid '$skip' value. '$skip' must be a non-negative integer.",
            "target": "$skip"
        }]
    }
}

Response 429 Too many requests

This response indicates that the user has sent too many requests in a given amount of time.

json
{
    "error": {
        "code": "TooManyRequests",
        "message": "More requests were received than the subscription rate-limit allows."
    }
}

Response headers

Name
Description
retry-after

The number of requests exceeds the rate-limit for the client subscription.

Changeset Extended Data

Metadata of Changeset Extended Data.

Name
Type
Description
changesetIndex
Int64

Index of the changeset.

changesetId
String

Id of the Changeset the extended data is associated to.

data
String

Application specific valid json object encoded as base64 string. Maximum supported size is 204800 bytes.

Changesets Extended Data Response

List of Changesets Extended Data entries.

Name
Type
Description
extendedData

Changesets Extended Data entries of the iModel.

_links

Contains the hyperlinks to the previous and next pages of results.

Link

Hyperlink container.

Name
Type
Description
href
String

Hyperlink to the specific entity.

Paging Links

URLs for redoing the current request, getting to the previous or next page of results, if applicable.

Name
Type
Description
self

URL for redoing the current request.

prev

URL for getting the previous page of results.

next

URL for getting the next page of results.

Error

Contains error information.

Name
Type
Description
code
String

One of a server-defined set of error codes.

message
String

A human-readable representation of the error.

target
String, null

The target of the error.

Error Response

Gives details for an error that occurred while handling the request. Note that clients MUST NOT assume that every failed request will produce an object of this schema, or that all of the properties in the response will be non-null, as the error may have prevented this response from being constructed.

Name
Type
Description
error

Error information.