DAX help - counting single item lines

[Si_7777]

I have  measure to count PO's with single items

It kinda works but doesnt sum per day / week / per year

My measure is ; 

1 Items per PO =

    CALCULATE(COUNTROWS(Sage_POPOrderReturnLine)

    , FILTER(Sage_POPOrderReturnLine, DISTINCTCOUNT(Sage_POPOrderReturnLine[ItemCode]) = 1))

I have tried summerize but I am not getting the syntax correct.

[v-hashadapu]

Hi @Si_7777 , hope you are doing great. May we know if your issue is solved or if you are still experiencing difficulties. Please share the details as it will help the community, especially others with similar issues.

[Wilson_]

Hi Si_7777,

The main issue is you need it to check for 1 item on the PO by day and order, before rolling it up to the different levels in your hierarchy. However, the way your measure is written, it is, for example, checking for 1 item on the PO for the whole year at the top level in your matrix.

Try something like:

1 Item per PO =
VAR _Summarized =
    FILTER (
        SUMMARIZE (
            Dates[Year], -- first field in your matrix row hierarchy
            Dates[Month], -- second field in your matrix row hierarchy
            Dates[Date], -- third field in your matrix row hierarchy
            Sage_POPOrderReturnLine[POPOrderNumber] -- fourth field in your matrix row hierarchy
        ),
        CALCULATE ( DISTINCTCOUNT ( Sage_POPOrderReturnLine[ItemCode] ) = 1
    )
VAR _Result = COUNTROWS ( _Summarized )

RETURN _Result

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[v-hashadapu]

Hi @Si_7777 , Thank you for reaching out to the Microsoft Community Forum.

We took sample data based on your scenario and recreated your matrix structure with Year -> Date -> PO Number. We rewrote the 1 Items per PO measure to first identify POs that have exactly one distinct item, then count them in the current filter context. This ensures the count is accurate at PO, daily and yearly levels without double-counting.

Please check the attached .pbix file for your reference and share your thoughts.

Thank you.