Create Transformation - Transformations

Transformations

Download API definition:

This API is a Technical Preview and is available for testing purposes only. Do not use in production.

post https://qa-api.bentley.com/transformations/

This endpoint is used to run the transformation based on an already created configuration. Sending a post request will submit a background processing job that is able to report progress back to the same transformation instance that you can query by the transformation ID.

First run of the transformation will process the whole source iModel and push data to the target iModel. Only one transformation job can run on the same target iModel at the same time. Consecutively submitted jobs for the same configurationId will only process changes to the source iModel.

Transformation queueing

When a transformation with the target iModel is already running, any new transformation is queued and will start once it is dequeued. If queuing is disabled, only one transformation can be created at a time. Transformation queuing is enabled by setting the Enable-Transformation-Queueing header to true. If the header is not set, the default value is false.

Transformation status

Transformation status parameter provides information about the current status of a transformation. The status can have one of the following values:

Created - this status is assigned when the transformation is created, but background job has not started yet. Once the background job is started, initialization begins.
Initializing - a transformation in the Initializing status means that the background job has been started and is preparing to run the transformation. This process involves downloading all the necessary iModels and setting up other parameters as required by the transformation.
Started - when the transformation background job starts processing the iModel elements based on the transformation configuration, the status changes to Started. You can monitor the progress of the transformation during this stage by tracking the count of processed elements. This count allows you to estimate when the transformation might finish.
Succeeded - upon successful completion of the transformation, the status is set to Succeeded. This means all iModel elements have been processed as per the transformation configuration without any errors.
Failed - if an error occurs during the transformation process (while in the Initializing or Started statuses), the status changes to Failed. This indicates that the transformation has ended prematurely and would leave the target iModel in an invalid state if any intermediate changes were pushed. If the transformation is in an invalid state, it is necessary to use a new target iModel in order to proceed with further transformations.
Aborted - a transformation is labeled as Aborted when it is manually cancelled by the user. Note that a transformation cannot be cancelled if it has already finished (its status is either Failed or Succeeded).

Transformation error code

Transformation errorCode parameter provides information about error which occurred during transformation.

API Errors.

[1 - 999]

Unknown API Error.

UnknownApiError

Transformation was terminated as it was stuck in created state for too long.

CreatedStateTimeOut

Transformation was terminated as it was running for too long.

JobRunTimeOut

Unknown errors which happened while executing transformation.

[1000 - 1999]

Transient network errors, set when there are transient issues with requests to other services. User should “try again later”.

[2000 - 2999]

Can not execute transformation, user action is required to fix the issue.

[4000 - 4999]

Transformation already started.

4001

TransformationAlreadyStarted

No changes to process.

4002

NoChangesToProcess

Maximum entities limit exceeded, applicable for transformations started from 'Try it out' button located in developer.bentley.com site.

4003

LimitedTransformationError

Cannot chain transformations.

4004

CanNotChainTransformations

Unsupported combination of transformation types.

4005

UnsupportedCombinationOfTransformationTypes

Invalid transformation parameters.

4006

InvalidTransformParameters

Invalid configuration.

4007

InvalidConfiguration

Change processing is not supported.

4008

ChangeProcessingIsNotSupported

Missing scope element.

4009

MissingScopeElement

Missing Repository Link.

4010

MissingRepositoryLink

Source repository link has no federation guid.

4011

SourceRepositoryLinkHasNoFederationGuid

Forking transformation was not executed, set for MergeFork transformation.

4012

ForkingTransformationNotExecuted

Fork relationship was not established between source and target iModels, set for Merge iModel transformation.

4013

ForkRelationshipIsNotEstablished

Could not populate federation guids, set for PopulateFederationGuid transformation.

4014

CouldNotPopulateFederationGuids

iModel contains elements without federation guids, set for Merge iModel transformation.

4015

ElementsWithoutFederationGuids

Could not create schema definition.

4016

CouldNotCreateSchemaDefinition

Missing spatial location model.

4017

MissingSpatialLocationModel

Incompatible geo location.

4018

IncompatibleGeoLocations

Cannot remove ambiguous source data. Multiple sources have the same origin iModel.

4019

AmbiguousSourceDataRemoval

Schema errors.

[5000 - 5999]

Schema was not found.

5001

SchemaNotFound

Schema version was not found.

5002

SchemaVersionNotFound

Schema conflict.

5003

SchemaConflict

Data export errors.

[6000-6999]

Entity export error.

6001

ExportEntityError

Code spec export error.

6003

ExportCodeSpecError

Schema export error.

6004

ExportSchemaError

Element code conflict.

6005

ExportElementCodeConflict

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

You must have imodels_write assigned for the target iModel and imodels_read assigned for the source iModel within related configuration. You can check iModel permissions here.

Rate limits

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

Transformation Element Limiting

When you run a transformation with the "Try it out" function, you are limited to transforming iModels with up to 1000 entities, which includes elements and relationships. For more information about entities, see Element Fundamentals and Relationship Fundamentals. If an iModel has more than 1000 entities, transformation will not succeed. To transform iModels without any limits, please generate authorization for a different client and call this endpoint directly or add the newly generated authorization value to a Authorization field. For more information about using your own client, see Authorize Service.

Request

Request headers

Enable-Transformation-Queueing

Setting it to true allows multiple transformations to be queued and processed sequentially. If not set, the default setting is true.

Authorization

Yes

OAuth access token with itwin-platform scope

Yes

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

Request body

Transformation (Create)

configurationId

String

Yes

configurationId of this transformation.

sourceChangeset

String, null

Optional ID of the change set used for source iModel when running transformation.

Example

json

{
    "configurationId": "00000000-0000-0000-0000-000000000000"
}

Response

Response 201 Created

Returns the created transformation.

json

{
    "transformation": {
        "id": "00000000-0000-0000-0000-000000000000",
        "status": "Created",
        "errorMessage": "",
        "errorCode": 1000,
        "processedEntityCount": 0,
        "totalEntityCount": 100,
        "createdDateTime": "2024-03-05T02:51:33.0000000+00:00",
        "startedDateTime": "2021-08-02T02:51:33.0000000+00:00",
        "finishedDateTime": "2021-08-02T02:51:33.0000000+00:00",
        "sourceChangeset": {
            "id": "0000000000000000000000000000000000000000"
        },
        "_links": {
            "configuration": {
                "href": "https://api.bentley.com/transformations/configurations/00000000-0000-0000-0000-000000000000"
            }
        }
    }
}

Response 400 Bad Request

The request cannot be processed by the server due to a client error (e.g. malformed request syntax)

json

{
    "error": {
        "code": "MissingRequestBody",
        "message": "Request body was not provided."
    }
}

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 403 Forbidden

User is not authorized to create a transformation.

json

{
    "error": {
        "code": "InsufficientPermissions",
        "message": "The user has insufficient permissions for the requested operation."
    }
}

Response 409 Conflict

There is an ongoing transformation with the same target iModel.

json

{
    "error": {
        "code": "ConflictWithAnotherTransformation",
        "message": "Target iModel in use by another Transformation."
    }
}

Response 422 Unprocessable Entity

The referenced configuration does not exist.

json

{
    "error": {
        "code": "InvalidTransformationsRequest",
        "message": "Configuration is not available.",
        "target": "ConfigurationId"
    }
}

Response 429 Too many requests

This response indicates that the client sent more requests than allowed by this API for the current tier of the client.

json

{
    "error": {
        "code": "RateLimitExceeded",
        "message": "The client sent more requests than allowed by this API for the current tier of the client."
    }
}

Response headers

retry-after

Number of seconds to wait until client is allowed to make more requests.

Definitions

Link

href

String

Link to a resource.

json

{
    "type": "object",
    "title": "Link",
    "properties": {
        "href": {
            "type": "string",
            "description": "Link to a resource."
        }
    },
    "additionalProperties": false
}

Error

Contains error information.

code

String

One of a server-defined set of error codes.

target

String, null

The target of the error.

message

String

A human-readable representation of the error.

json

{
    "type": "object",
    "required": [
        "code",
        "message"
    ],
    "properties": {
        "code": {
            "type": "string",
            "description": "One of a server-defined set of error codes."
        },
        "target": {
            "type": "string",
            "nullable": true,
            "description": "The target of the error."
        },
        "message": {
            "type": "string",
            "description": "A human-readable representation of the error."
        }
    },
    "description": "Contains error information.",
    "additionalProperties": true
}

DetailedError

Contains error information and an array of more specific errors.

code

String

One of a server-defined set of error codes.

target

String, null

The target of the error.

details

Error[]

Optional array of more specific errors.

message

String

A human-readable representation of the error.

json

{
    "type": "object",
    "required": [
        "code",
        "message",
        "details"
    ],
    "properties": {
        "code": {
            "type": "string",
            "description": "One of a server-defined set of error codes."
        },
        "target": {
            "type": "string",
            "nullable": true,
            "description": "The target of the error."
        },
        "details": {
            "type": "array",
            "items": {
                "$ref": "#/components/schemas/Error"
            },
            "description": "Optional array of more specific errors."
        },
        "message": {
            "type": "string",
            "description": "A human-readable representation of the error."
        }
    },
    "description": "Contains error information and an array of more specific errors.",
    "additionalProperties": true
}

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.

error

Error

Error information.

json

{
    "type": "object",
    "title": "Error Response",
    "required": [
        "error"
    ],
    "properties": {
        "error": {
            "$ref": "#/components/schemas/Error",
            "description": "Error information."
        }
    },
    "description": "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.",
    "additionalProperties": false
}

Transformation

Transformation data.

String

ID of the transformation.

_links

Links_Configuration

status

TransformationStatus

errorCode

Int32

Error code that gets filled if an error occurred during transformation.

errorMessage

String

Error message that gets filled if an error occurred during transformation.

createdDateTime

Date-time

Time the transformation entity was created.

sourceChangeset

Changeset_Response

startedDateTime

Date-time, null

Time the transformation was initiated.

finishedDateTime

Date-time, null

Time the transformation was finished. Empty if transformation is still running.

totalEntityCount

Int32

Total amount of entities to process.

processedEntityCount

Int32

Number of entities that have been processed.

lastTargetChangesetPushed

Changeset_Response

json

{
    "type": "object",
    "title": "Transformation",
    "required": [
        "id",
        "status",
        "processedEntityCount",
        "totalEntityCount",
        "createdDateTime",
        "_links"
    ],
    "properties": {
        "id": {
            "type": "string",
            "example": "00000000-0000-0000-0000-000000000000",
            "description": "ID of the transformation."
        },
        "_links": {
            "$ref": "#/components/schemas/Links_Configuration"
        },
        "status": {
            "$ref": "#/components/schemas/TransformationStatus"
        },
        "errorCode": {
            "type": "integer",
            "format": "int32",
            "example": 4006,
            "description": "Error code that gets filled if an error occurred during transformation."
        },
        "errorMessage": {
            "type": "string",
            "example": "Example message",
            "description": "Error message that gets filled if an error occurred during transformation."
        },
        "createdDateTime": {
            "type": "string",
            "format": "date-time",
            "example": "0000-00-00T00:00:00.0000000Z",
            "description": "Time the transformation entity was created."
        },
        "sourceChangeset": {
            "$ref": "#/components/schemas/Changeset_Response"
        },
        "startedDateTime": {
            "type": "string",
            "format": "date-time",
            "example": "0000-00-00T00:00:00.0000000Z",
            "nullable": true,
            "description": "Time the transformation was initiated."
        },
        "finishedDateTime": {
            "type": "string",
            "format": "date-time",
            "example": "0000-00-00T00:00:00.0000000Z",
            "nullable": true,
            "description": "Time the transformation was finished.\nEmpty if transformation is still running."
        },
        "totalEntityCount": {
            "type": "integer",
            "format": "int32",
            "example": 100,
            "description": "Total amount of entities to process."
        },
        "processedEntityCount": {
            "type": "integer",
            "format": "int32",
            "example": 50,
            "description": "Number of entities that have been processed."
        },
        "lastTargetChangesetPushed": {
            "$ref": "#/components/schemas/Changeset_Response"
        }
    },
    "description": "Transformation data.",
    "additionalProperties": false
}

Changeset

Changeset Id and index data.

String

ID of the changeset.

index

Number

Index of the changeset.

json

{
    "type": "object",
    "title": "Changeset",
    "properties": {
        "id": {
            "type": "string",
            "example": "0",
            "description": "ID of the changeset."
        },
        "index": {
            "type": "number",
            "example": 1,
            "description": "Index of the changeset."
        }
    },
    "description": "Changeset Id and index data.",
    "additionalProperties": false
}

Link to a configuration

configuration

Link

json

{
    "type": "object",
    "title": "Link to a configuration",
    "properties": {
        "configuration": {
            "$ref": "#/components/schemas/Link"
        }
    },
    "additionalProperties": false
}

Transformation status

Created

String

Started

String

Succeeded

String

Failed

String

Aborted

String

Initializing

String

json

{
    "enum": [
        "Created",
        "Started",
        "Succeeded",
        "Failed",
        "Aborted",
        "Initializing"
    ],
    "type": "string",
    "title": "Transformation status"
}

Detailed Error Response

error

DetailedError

Error Detailed information.

json

{
    "type": "object",
    "title": "Detailed Error Response",
    "required": [
        "error"
    ],
    "properties": {
        "error": {
            "$ref": "#/components/schemas/DetailedError",
            "description": "Error Detailed information."
        }
    },
    "description": "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.",
    "additionalProperties": false
}

Transformation (Create)

configurationId

String

configurationId of this transformation.

sourceChangeset

String, null

Optional ID of the change set used for source iModel when running transformation.

json

{
    "type": "object",
    "title": "Transformation (Create)",
    "required": [
        "configurationId"
    ],
    "properties": {
        "configurationId": {
            "type": "string",
            "example": "00000000-0000-0000-0000-000000000000",
            "description": "configurationId of this transformation."
        },
        "sourceChangeset": {
            "type": "string",
            "example": "0",
            "nullable": true,
            "description": "Optional ID of the change set used for source iModel when running transformation."
        }
    },
    "additionalProperties": false
}

Transformation

transformation

Transformation

json

{
    "type": "object",
    "title": "Transformation",
    "properties": {
        "transformation": {
            "$ref": "#/components/schemas/Transformation"
        }
    },
    "additionalProperties": false
}

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