My goal is to be able to have my loop go through a list and check if
any cell in column a is equal to the list, if not it must make a
prompt for the next 7 cells.

If ActiveCell.Value 1 Then 'Not sure how to make this only column 1
For Each ce In Range("L1:L500" & Cells(Rows.Count, 1).End(xlUp).Row)
'Not sure how to use my named range "Material Numbers" instead of
"L1:L500"
ce.Offset(0, 1) = WorksheetFunction.CountIf(Range("L1:L500"),
ce.Value)
If ActiveCell.Value = ce.Value Then
ActiveCell.Offset(0, 1) = InputBox("Enter data", "Column B")
ActiveCell.Offset(0, 2) = InputBox("Enter data", "Column C")
ActiveCell.Offset(0, 3) = InputBox("Enter data", "Column D")
ActiveCell.Offset(0, 4) = InputBox("Enter data", "Column E")
ActiveCell.Offset(0, 5) = InputBox("Enter data", "Column F")
ActiveCell.Offset(0, 6) = InputBox("Enter data", "Column G")
ActiveCell.Offset(0, 7) = InputBox("Enter data", "Column H")
Exit Sub
Else
Next ce
End If

Thanks any help is appreciated
-Matt