I have a large spreadsheet of data containing part numbers. The part numbers
are entered as numbers and then custom formatted to display dashes (i.e, part
number 1234567890 displays as 123-456-7890). I am trying to use a DSUM
formula that will add the beginning inventory (rows) for a month (column) for
a particular group of parts. For example, all parts that begin with "3002"
(i.e., 30020007409). I cannot for the life of me get the criteria to
recognize the part number. I have tried criteria such as "30020000000", and
"3002*". Nothing is working. It's like Excel either isn't recognizing the
number OR it can't do DSUM based on more than one piece of criteria (which it
should be able to do). Help!