With the help of the community, I have two formulas that I would like to combine into one if possible.
Formula 1
=IF(Ancestors@row = 0, COUNTIF(Ancestors$1:Ancestors@row, Ancestors@row = 0), "")
Formula 2
=IF(LEN(RowID@row) = 1, "000" + RowID@row, IF(LEN(RowID@row) = 2, "00" + RowID@row, IF(LEN(RowID@row) = 3, "0" + RowID@row, RowID@row)))
My failed try
This throws an #INCORRECT ARGUMENT SET error
=IF(ANCESTORS@row = 0, COUNTIF(ANCESTORS$1:ANCESTORS@row, ANCESTORS@row = 0, "", (IF(LEN(RowID@row) = 1, "000" + RowID@row, IF(LEN(RowID@row) = 2, "00" + RowID@row, IF(LEN(RowID@row) = 3, "0" + RowID@row, RowID@row))))))