VBA Code To Determine If Outside Sheet References Exist In Cell Formulas

VBA Macro External References To Worksheets within Formulas

What This VBA Macro Code Does

When you are trying to understand an unfamiliar workbook or Excel model, it can immensely help knowing which tabs are feeding into the one you are currently viewing. This little macro will give you a message box indicating any outside worksheet references found in the cell formulas of the ActiveSheet. Enjoy!

Sub OutsideFormulaReferences()
'PURPOSE: Determine if any formulas reference other worksheets within the workbook
'SOURCE: www.TheSpreadsheetGuru.com/the-code-vault

Dim rng As Range
Dim RefFound As Range
Dim sht As Worksheet
Dim RefFoundArray As String
Dim x As Long

'Numbering variable for listing results
  x = 1

'Create range range with only cells containing formulas
  Set rng = ActiveSheet.UsedRange.SpecialCells(xlCellTypeFormulas)

'Loop through each worksheet in workbook to test for references
  For Each sht In ActiveWorkbook.Worksheets
    If sht.Name <> ActiveSheet.Name Then
      
      'Try to find sheet name reference in formulas
        If InStr(1, sht.Name, " ") = 0 Then
          Set RefFound = rng.Find(sht.Name & "!")
        Else
          Set RefFound = rng.Find("'" & sht.Name & "'!")
        End If
      
      'Is sheet name located in any formulas? If so, store Sheet Name
        If Not RefFound Is Nothing Then
          RefFoundResults = RefFoundResults & Format(x, "00") & ". " & sht.Name & vbCr
          x = x + 1
          Set RefFound = Nothing
        End If
        
    End If
  Next sht

'Report Results
  If RefFoundResults <> "" Then
    MsgBox "The following sheets are being referenced in formulas: " _
     & vbCr & vbCr & RefFoundResults, , "Outside Sheet Formula References"
  Else
    MsgBox "No formula references to other worksheets in this Excel file " & _
     "were found on this sheet", , "Outside Sheet Formula References"
  End If
    
End Sub

How Do I Modify This To Fit My Specific Needs?

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I highly recommend that you check this guide out before asking me or anyone else in the comments section to solve your specific problem. I can guarantee 9 times out of 10, one of my strategies will get you the answer(s) you are needing faster than it will take me to get back to you with a possible solution. I try my best to help everyone out, but sometimes I don't have time to fit everyone's questions in (there never seem to be quite enough hours in the day!).

I wish you the best of luck and I hope this tutorial gets you heading in the right direction!

- Chris