XMLPORT import error

Hello All,

My requirement is to import Purchase Lines.

What I did is, on PO page I gave two buttons(on push XMLPORT are running) one for export and other for import the data.


Purchase Header will be available, so when I run POXMLExport following csv file is generating with PO No and headers only(Line No is removed from file).

then user will edit file, for Item No, Loc Code and Qty and will import by button PurchLineImport.

Export xmlport working fine but when I am trying to edited csv file I am getting following error.

Import xmlport design is as below

can someone tell me where and what mistake I am doing. using NAV 2017.

Thanks in advance.