Replaced by list-accounts | SailPoint Developer Community
You will need to use three query parameters to filter by uncorrelated accounts for a given source.
GET https://tenant.api.identitynow.com/v3/accounts?count=true&limit=0&filters=sourceId eq "f4e73766efdf4dc6acdeed179606d694" and uncorrelated eq true
For efficiency, we set the limit to 0 so we don’t return any account data in the payload. Instead, we look at the response header X-Total-Count to get the number of accounts that are uncorrelated for the specified source.
If you actually want to see the account data, just remove the limit query param and paginate through the results.