"You cant go to the Specified Record" Error

After filling out all the three Pages of my form, user clicked the AddNew button in order to advance to a new record...user started to receive...
"You cant go to the specified record" and unable to save the current record.

..debug highlighted from the code below
DoCmd.GoToRecord , "frmSewer", acNewRec

Any suggestion in correcting this problem will be appreciated.
' ***********************************
Private Sub btnAddNew_Click()
On Error GoTo Err_btnAddNew_Click

 If Not MandatoryFields Then    ' <---Check for Mandatory Fields
      Exit Sub
  End If
         
 Call SaveCurrentControlValues            ' For Autofill Routine
' *******************************
   If Me.AllowAdditions = False Then Me.AllowAdditions = True
  Me.Filter = ""
  Me.FilterOn = False
 
  If Me.NewRecord Then
    DoCmd.GoToRecord , "frmSewer", acNewRec
    Call QuestionBox
    Me.txtAppEntryDate.SetFocus
 End If
Exit_btnAddNew_Click:
     Exit Sub
Err_btnAddNew_Click:
     MsgBox Err.Description
    Resume Exit_btnAddNew_Click
    End Sub