BPC 10.1 NW Time Dimension

Hi All

    Now we have a problem about time dimension.

    Business scenario:Creat a new member of time dimension. Named "2016.INP", For inout total amount.

    When we creat a new report.Column dimension:Time and Measures  Member :2016.INP"  and YTD.

  We will get a error .Please check the attachment for more info.

  Thanks all.