Within Datastream Web Service (DSWS), I want to use Datastream Functions (link) for time series, as they exist within the TR Datastream Excel plugin.
For example 'PCH#(X(P), 3M)'
When I do a static request for a single day, I get a result.
However, when I try a time serie, I got the error
"Error - please check instruments and parameters (time series or static)"
Are Datastream function not supported for time series in DSWS?