Dataflow transaction history via REST API: list RequestId too

We're trying to monitor dataset and dataflow API-triggered refresh states. When triggering a refresh, the REST API returns a RequestId header which we can store for later use. When querying dataset refresh history, the REST API also returns this RequestId so we can pair the IDs. But this doesn't work for dataflows: https://docs.microsoft.com/en-us/rest/api/power-bi/dataflows/get-dataflow-transactions This API doesn't return the RequestId, even if we know it because it was provided when the dataflow refresh was triggered. It would be great if you could add this property to the transaction details response - so I could use the same monitoring logic for both datasets and dataflows.