Cross Reference Excel Data between Different Sheets and Highlight the Duplicates

[archangel0312]

I have a workbook with 10 sheets of machine parts. On sheet 10, I am going to have the critical parts listed. I want to reference all of the information on sheet 10 in columns A-I, and I want to then highlight the row for every other instance in the workbook.
For example. If I have SAP number "829131" on sheet 10. I want every row that has SAP number "829131" in the entire workbook to be highlighted.

I have no idea where to even start with this. So hopefully you can help me out.

I found something online that I thought I would work, but it only references the active cell and I can't figure out how to make it reference the range I need it to.

Sub CriticalSpare()

    'Code will highlight all rows in all open workbooks
    'which contain the same text as active cell
    Dim wb As Workbook
    Dim ws As Worksheet
    Dim fString As String
    Dim firstAdd As String
    Dim fCell As Range
    Dim myCol As Long

    'The item to look for is the active cell
    fString = ActiveCell.Value

    'Highlight things in red
    myCol = 41

    
    'Don't run on a blank cell
    If fString = "" Then
         MsgBox "No value given"
         Exit Sub
    End If

    Application.ScreenUpdating = False
    'Loop through all workbooks...
    For Each wb In Application.Workbooks
    '...and all worksheets
         For Each ws In wb.Worksheets
             Set fCell = Nothing
                firstAdd = ""
             With ws.Cells
                 'looking for the desired value
                Set fCell = .Find(fString)
                 If Not fCell Is Nothing Then
                        firstAdd = fCell.Address
                       Do
                          'and if found, highlight the row
                        fCell.Interior.ColorIndex = myCol
                            Set fCell = .FindNext(fCell)
                      Loop Until fCell.Address = firstAdd
                   End If
             End With
            Next ws
    Next wb
    Application.ScreenUpdating = True

End Sub