Using Datastream functions in DSWS

AlexK · 2025-05-13T09:51:23+00:00

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Hi, is it possible to use Datastream aggregation functions in DSWS? E.g. sth like F:VIE(SUM#(X(UDD),2023-01-09,2025-05-02))? Thx
PS: Sorry if the question was already asked, the gateway was down so I couldnt perform a search…

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Jirapongse

@AlexK

Thank you for reaching out to us.

Is it this one?

df = ds.get_data(tickers="F:VIE|E", 
                 fields = [
                     "SUM#(X(UDD),2023-01-09,2025-05-02)"],
                 kind=1)
df

I am using the Datastream Web Service.

AlexK

Hi Jirapongse, thank you very much. I have just realised that I wasn't precise with my question. I realised I am using DSS REST, making a request using the HTTPS Post method and XML… The response I am getting from the server is $$"ER","E21B","INVALID CODE F:VIE(SUM#(UDD,2023-01-13,2025-05-09)) ",

Jirapongse

Please share the HTTPS Post message that you are using.

AlexK

This is the message I am using: (I replaced the TokenValue with XXX)
<DSGetDataRequest xmlns="http://dsws.datastream.com/client/V1/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><DataRequest><DataTypes/><Date><End></End><Frequency>Y</Frequency><Kind>Snapshot</Kind><Start></Start></Date><Instrument><Properties><DSStringObjectKVPair xmlns="http://dsws.datastream.com/client/V1/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><Key>IsExpression</Key><Value i:nil="true"/></DSStringObjectKVPair></Properties><Value>F:VIE(SUM#(UDD,2023-01-13,2025-05-09))</Value></Instrument><Tag i:nil="true"/></DataRequest><TokenValue>XXX</TokenValue></DSGetDataRequest>

Jirapongse

@AlexK

It could be the DSWS SOAP API.

You can check the request message from this website (https://product.datastream.com/DswsClient/Docs/TestSoapV1.aspx).

The request message is:

<GetData xmlns="http://dsws.datastream.com/client/V1/">
	<request	xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
		<DataRequest>
			<DataTypes>
				<DSDataType>
					<Properties i:nil="true"/>
					<Value>(SUM#(UDD,2023-01-13,2025-05-09))</Value>
				</DSDataType>
			</DataTypes>
			<Date>
				<End/>
				<Frequency/>
				<Kind>TimeSeries</Kind>
				<Start/>
			</Date>
			<Instrument>
				<Properties>
					<DSStringObjectKVPair>
						<Key>IsExpression</Key>
						<Value i:type="d9p1:boolean" xmlns:d9p1="http://www.w3.org/2001/XMLSchema">true
						</Value>
					</DSStringObjectKVPair>
				</Properties>
				<Value>F:VIE</Value>
			</Instrument>
			<Tag i:nil="true"/>
		</DataRequest>
		<Properties i:nil="true"/>
		<TokenValue><token></TokenValue>
	</request>
</GetData>

AlexK

Hi, unfortunately, this does not produce the intended result. Instead of delivering the sum of unadjusted dividends for F:VIE over the time period from 13-jan-2023 to 9-May-2025 (a snapshot), it returns the price of the security. Any idea why the calculation is not performing?

Jirapongse

Do you have a working formula used in Excel?

Otherwise, please contact the Datastream support team directly via MyAccount.

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