Hi Pramod,
If i understand your reuirement correctly then it is to display material document number along some other deatils as a header and item level deatils on a smartform with page-break on MBLNR field.
I would suggest you the below approach :
Main: this will be the one main table which will store the header and item level data for a particular mblnr.
structure of main table:
Header : contains header details
Item[] : contains item details
Sort the main table based on mblnr first.
Steps :
1.Now loop through main table .
2.Display your header details
3.Loop your item table and dispaly its details.
4.At the end of main loop provide the command to page break .
regards,
Sumit