Hi @stephen.cook,

From what I understand, you are using the Thomson Reuters .NET SDK and you are making two different requests to the TimeSeries service using the same RIC. You're also using the same callback method for both requests but you want to be able to do the distinction between the two requests when data chunks arrive.

In my opinion, the easiest way to achieve this is to use a lambda when declaring your callback. The purpose of this lamdba is to add the missing identifier and to pass it to your callback method.

Please find a code snippet here after:

public void GetTimeSeriesData()
{
                
    DataServices.Instance.TimeSeries.SetupDataRequest("IBM.N")
                                    .OnDataReceived((DataChunk chunk) => this.OnDataReceived("#MyRequestIdentifier1", chunk))
                                    .CreateAndSend();
}

private void OnDataReceived(string identifier, DataChunk chunk)
{
    // Process your chunk.
} 

Please let me know if this answer your question,

Kind regards,

Hi @stephen.cook

According to get_timeseries() document here.

It does not support closure argument.