New Lists API Endpoints
We have added the following endpoints to List API to create lists based on a set of known record IDs.
You can create a list from a set of IDs with the CreateListsFromIds endpoint.
You can append IDs to a list with the AppendIdsToList endpoint.
To create larger lists with more records, you can use these endpoints together. For example, to create a list filtered to 250,000 IDs, you can:
Call the CreateListsFromIds with 100,000 Ids to create the list and capture the list ID for subsequent requests
Call the AppendIdsToList with 100,000 IDs
Call the AppendIdsToList with 50,000 IDs
For more information, see the List API changelog.