Lookup Multiple tables with Conditional

Hi, Stuznet 

For the example of tables you have created, you can create the measure as follows.

Max_Sq =

    IFERROR (

    IF (

        'Table'[Type] = "Actual Start",

        LOOKUPVALUE ( PlannedStart[Export_Index], PlannedStart[UID], 'Table'[UID] ),

        IF (

            'Table'[Type] = "Actual Finish",

            LOOKUPVALUE ( PlannedFinish[Export_Index], PlannedFinish[UID], 'Table'[UID] ),

            BLANK()

        )

    ),

    BLANK()

)

Result:

If I misunderstand the your thoughts, please inform me of your expected output. I am glad to solve the problem for you.

Best Regards,

Allan

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