strBoomark is set in the declaration section of frmPersonnel above so is available through-out this class module.
Private strBookmark as Variant

1. On clicking on Add Record button I am trying to save the bookmark of the current record just prior to adding a new record (Highlighted Blue), so that if I abandon the new record, I can go back to the previous record.

Private Sub cmbAddNew_Click()If glbHandleErrors Then On Error GoTo ErrHandler ' Set Error Handling
    Dim dbs As DAO.Database ' Dimension Database
    Dim rs As DAO.Recordset ' Dimesion Recordset
    Set dbs = CurrentDb
    Set rs = Me.RecordsetClone

If Forms!frmLoginScreen!numSecurityLevel >= 8 Then ' Checks Security Clearance
    strBookMark = rs.Bookmark 'Set Bookmark for current record
    Call addNewRecord("frmPersonnel", "fkTitleID") ' Add New Record Function
    Me!frmStatusSubForm.Form.AllowAdditions = True ' Set Allow Additions Default Setting.
    Call modTracking(Me.Name, 1, Environ("ComputerName"), Environ("UserName"), "") ' Tracks Addition of Record to WLP System.
End If

ExitHere:   ' Any Clean Up Code
   rs.Close
   dbs.Close
   Set rs = Nothing
   Set dbs = Nothing
   Err.Clear
   Exit Sub

ErrHandler: ' ERROR HANDLING ROUTINE.
   If Err.Number <> 0 Then
       Call LogError(Err.Number, Err.Description, Forms!frmLoginScreen!fkID, Environ("UserName"), Environ("ComputerName"), "", glbHandleErrors)
      Resume ExitHere
   End If
End Sub
2. After the New Record opens, I then want to offer the user the option of either saving the New Record or Abandoning it in the Form_BeforeUpdate Event below:

3. On abandonment I want to return to the previous record(in Blue), but it's not working because strBookMark = Empty

Private Sub Form_BeforeUpdate(Cancel As Integer)
If glbHandleErrors Then On Error GoTo ErrHandler ' Set Error Handling
    Dim dbs As DAO.Database ' Dimension Database
    Dim rs As DAO.Recordset ' Dimesion Recordset
    
    Set dbs = CurrentDb
    Set rs = Me.RecordsetClone
    
Dim strMessage As String, Response
    If Me.NewRecord = True Then ' Validates if New Record
    ' Validate that Surname has Entered is a NEW record.
        If IsNull(txtSurname) Then
        
        ' Initialise Message String.
            strMessage = "Cannot Save Record Without Surname." & vbCrLf _
                       & "Select YES to return to Surname Field." & vbCrLf _
                       & "Select NO to Abandon Change(s). Return to Previous Record."
        
           Response = MsgBox(strMessage, vbYesNo)
            If Response = vbNo Then
               Cancel = True ' Cancel Record Save/Update
               rs.Bookmark = strBookMark
               Me.txtSearch.SetFocus
               GoTo ExitHere:


            Else
                Me.txtSurname.SetFocus
                GoTo ExitHere:
            End If
        End If
    
     End If


ExitHere:   ' Any Clean Up Code
   rs.Close
   dbs.Close
   Set rs = Nothing
   Set dbs = Nothing
   Err.Clear
   Exit Sub
  
ErrHandler: ' ERROR HANDLING ROUTINE.
   If Err.Number <> 0 Then
       Call LogError(Err.Number, Err.Description, Forms!frmLoginScreen!fkID, Environ("UserName"), Environ("ComputerName"), "", glbHandleErrors)
      Resume ExitHere
   End If
End Sub
Can anybody tell me what I'm doing wrong, strBookMark is Empty and it seems that after Cancel = True the form is not pointing at any record in the table.

Been trying for about a week to resolve this issue, can anyone give me an idea of what to do!!