If RANK result is not unique then RANK by Earliest Date

Hi,

I am not sure if I understood your question correctly, but if you are looking for creating a measure, please try the below. The first suggestion was creating a new column.

Desired Ranking measure: = 
VAR newtable =
    ADDCOLUMNS (
        ALL ( Report_Complexity ),
        "@newrank",
            VAR timerank =
                CALCULATE (
                    RANKX (
                        ALL ( Report_Complexity ),
                        CALCULATE ( MAX ( Report_Complexity[Submission Time] ) ),
                        ,
                        ASC
                    )
                )
            VAR ranking =
                CALCULATE (
                    IF (
                        SELECTEDVALUE ( Report_Complexity[Complexity Indicator] ) = "Low"
                            && SELECTEDVALUE ( Report_Complexity[Impact indicator] ) = "High",
                        1,
                        IF (
                            SELECTEDVALUE ( Report_Complexity[Complexity Indicator] ) = "High"
                                && SELECTEDVALUE ( Report_Complexity[Impact indicator] ) = "High",
                            2,
                            IF (
                                SELECTEDVALUE ( Report_Complexity[Complexity Indicator] ) = "Low"
                                    && SELECTEDVALUE ( Report_Complexity[Impact indicator] ) = "Low",
                                3,
                                IF (
                                    SELECTEDVALUE ( Report_Complexity[Complexity Indicator] ) = "High"
                                        && SELECTEDVALUE ( Report_Complexity[Impact indicator] ) = "Low",
                                    4
                                )
                            )
                        )
                    )
                )
            RETURN
                timerank + ranking * 10000
    )
RETURN
    IF (
        HASONEVALUE ( Report_Complexity[Request] ),
        RANKX (
            ALL ( Report_Complexity ),
            CALCULATE (
                SUMX (
                    FILTER (
                        newtable,
                        Report_Complexity[Request] = MAX ( Report_Complexity[Request] )
                    ),
                    [@newrank]
                )
            ),
            ,
            ASC
        )
    )