Generate PDF of PO on Presentation server on click of save button in ME21N/ME22N

Hello,

My requirement is to generate PDF document of Purchase Order on click of save button  in ME21N/ME22N.  I have used FM "CONVERT_OTFSPOOLJOB_2_PDF"(generates PDF format internal table based on OTF spool request) to get PDF. Now I am able to generate PDF on application server. But when I use GUI_DOWNLOAD so as to get PDF on presentation server below is the dump I am getting

My question: Is it possible to generate PDF on presentation/frontend server for my requirement.If yes please help me out.

Thanks in advance.