If i_final is the final internal table containing  retrieved business data, and w_final is the work area of your final internal table, then you can display the result (classical report view) by writing code in following manner.
*&———————————————————————*
*&      Form  TOP_OF_PAGE
*&———————————————————————*
*       For data display
*———————————————————————-*
form TOP_OF_PAGE .
IF NOT i_final[] IS INITIAL.
ULINE.
WRITE:/1 sy-vline,
2 ‘PO Number’,
12 sy-vline,
13 ‘PO Line Item’,
25 sy-vline,
26 [...]