i have to worksheets: 1) expenses and 2) track expense based on projects. In the sheet 2, i am trying to figure out how to add up column E (subsystem amount) based on 3 criteria, 1) Column B - Far # , 2) ColumnB period and 3) column D all expenses that starts with "56 of sheet 1.
the formula i have return the #spills error.
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