VBA in ACCESS how "Flag" and "Err05" got declared ? - vba

Question

I do not understand where "Flag and Err05" (at the bottom of the codes)have been declared ? I have searched the entire project and can not found where the two parameters got declared. When I try to use the below codes in another project , i got the error message "Run time error : items not found in this collection " Any answers?
>Private Sub SanityCheck_Click()
>Dim St As String, WrnFlag As Boolean, j As Integer
>Dim RS As Recordset, RS1 As Recordset, i As Integer, WrongRootCauses As String
>Dim Err01 As String, Err02 As String, Err03 As String, Err04 As String
>WrnFlag = False
>If IsNull(Me.FactoryList) Then
> MsgBox "Select valid Factory before proceeding.", vbExclamation
>Else
> St = "SELECT Factory, Step1, Step2, Step3, Step4, DateColumn FROM [tbl >Factory] WHERE Allowed = True and Factory = """ & Me.FactoryList.Value & """"
> Set RS = CurrentDb.OpenRecordset(St, dbOpenSnapshot)
'-- 12NC codes check --
> St = "SELECT Count([" & RS!Step2 & "].PLANT) AS 12NC_chk " & _
>"FROM [" & RS!Step2 & "] " & _
> "WHERE (((Len(Trim(IIf(Left(Trim([12NC_CODE]),3)=""000"",Right>([12NC_CODE],Len([12NC_CODE])-3),[12NC_CODE])))) Not In (0,1,12)));"
' "WHERE (((Len(Trim([12NC_CODE]))) Not In (0,1,12)));"
> Set RS1 = CurrentDb.OpenRecordset(St, dbOpenSnapshot)
>If RS1.BOF And RS1.EOF Then
> Err05 = "+ No 12NC issues found."
>Else
> RS1.MoveFirst
> RS1.MoveLast
> If RS1![12NC_chk] = 0 Then
> Err05 = "+ No 12NC issues found."
> Else
> Err05 = "- " & RS1![12NC_chk] & " Incorrect 12NCs found!"
> WrnFlag = True
> End If
> End If
'--
> If WrnFlag = True Then **Flag** = vbCritical Else **Flag** = vbInformation
> MsgBox RS!Factory & " input data sanity check:" & vbCrLf & vbCrLf & " " & >Err01 & vbCrLf & " " & Err02 & vbCrLf & " " & Err03 & _
> vbCrLf & " " & Err04 & vbCrLf & " " & Err05 & vbCrLf & vbCrLf & IIf>>(WrongRootCauses = "", "", " Unknown ADP Root Cause(s):" & vbCrLf & WrongRootCauses), Flag
> RS.Close
>RS1.Close
>End If
>End Sub

Answer 1

Two posibilities
Unless the file have Option explicit in the top, you are not forced to explicitely declare variables. Which means that Flag and Err05 have indeed never been declared. VBA will just create them on the fly with a Variant type and an initial value of Nothing.
They might be global variables declared outside of any sub in another file. Try right clicking the variable and then click definition in the menu, Access will show you the way.