We are receiving the error “Object reference not set to an instance of an object.” in the Purchase Order window while trying to save and while trying to tab out from a field. The error occurs randomly and not often. So, recreating it is not possible. When it happens the user needs to restart IFS to get rid of it.

It occurs only in the PO and no where else in the system.

We are using Apps 10 update 15

Ifs.Fnd.FndSystemException: Explorer: An Unhandled Exception has occurred ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Ifs.Application.Purch_.frmPurchaseOrder.SetDeliveryAddressInfo()
   at Ifs.Application.Purch_.frmPurchaseOrder.ValidateDeliveryAddress()
   at Ifs.Application.Purch_.frmPurchaseOrder.dfDeliveryAddress_OnPM_DataItemValidate(Object sender, WindowActionsEventArgs e)
   at Ifs.Application.Purch_.frmPurchaseOrder.dfDeliveryAddress_WindowActions(Object sender, WindowActionsEventArgs e)
   at PPJ.Runtime.Windows.SalWindow.InvokeWindowActions(WindowActionsEventArgs args, SalContext context, Int32 startIndex)
   at PPJ.Runtime.Windows.SalWindow.FireWindowActions(Int32 msgCode, IntPtr wParam, IntPtr lParam)
   at PPJ.Runtime.Windows.SalWindow.DispatchThenProcess(Message& m)
   at PPJ.Runtime.Windows.SalWindow.ProcessWndProc(Message& m)
   at PPJ.Runtime.Windows.SalDataField.WndProc(Message& m)
   at Ifs.Fnd.ApplicationForms.cDataField.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   --- End of inner exception stack trace ---

Really appreciate if any one can share any experiences or suggestions regarding this.

Regards

Chaminda