Changed Elements

The Changed Elements API provides consumers with the elements that have changed in an iModel between two changesets. This API has four operations:

1. Enable Change Tracking
2. Get Change Tracking
3. Get Comparison
4. Get Changesets

Before obtaining a comparison, it is necessary to enable change tracking of an iModel. This means that the API will be listening to the following events:

1. New Named Version Created
2. Changeset Group Completed

When any of those events trigger, the API will process the new changes and store a summary of all the elements that have changed.

After tracking is enabled and the iModel is processed, the comparison endpoint may be used to query for a summary of changed elements between any two given ChangeSets.`

Media links

Additional information can be found here:

• ITwin Developers Conference 2022. Changed Elements API: The Easy Way To Compare Changes - Youtube