Window Function false positive error

[nayjay91]

Using TE3 build 3.4.8392.26581. Writing a measure with a window function and getting an error

The WINDOW function expects a table expression for argument '5'

However, in the documentation it is clear this is an optional argument and the measure runs find without it specified.

[otykier]

Could you share the full DAX code you use for the WINDOW function?

[nayjay91]

VAR age = SELECTEDVALUE( 'Age_of_Forecast'[Age_of_Forecast] )
RETURN 
 CALCULATE(
     SUMX(
         WINDOW(
             0,
             abs,
             age,
             abs,
///this is the fifth argument that I leave blank
             ,
             ORDERBY(
                 'f_history'[Age_of_Forecast]
             ),
             KEEP,
             PARTITIONBY(
                 'f_history'[InventoryItemID],
                 'f_history'[CompanyDescription],
                 'f_history'[Forecast_Type],
                 'f_history'[Training_Month_End]
             )
         ),
         CALCULATE(
             SUM( 'f_history'[ForecastValue] )
             - SUM( 'f_history'[qty_sold_cleaned] )
         )
     ), ALL( 'Age_of_Forecast'[Age_of_Forecast] )
 )

[otykier]

Thanks, we're looking into it!

[otykier]

This is now fixed in 3.4.1. Thanks for reporting!