Run tym error "illegal statement"

Question

hi frends i am executing a program for ALV view but a run tym error is there "rror in an ABAP/4 statement when processing an internal table."
the main part of the code is :
<              P_NOCOVE AS CHECKBOX DEFAULT ' ', "NO COVER PAGE
            P_NONEWP AS CHECKBOX DEFAULT ' ', "NO NEW PAGE
            P_NOLINF AS CHECKBOX DEFAULT 'X', "NO PRINT LIST INFO
            P_RESERV TYPE I.                  "NO OF FOOTER LINE
INITIALIZATION.
G_REPID = SY-REPID.
PERFORM PRINT_BUILD    USING GS_PRINT.      "Print PARAMETERS
START-OF-SELECTION.
TEST DATA
select * from RESB   .   "where RSNUM = 305 and RSPOS = 1.
  var_qty = RESB-BDMNG.                                   "it assigns req qty to var_qty.
  var_mat_no = RESB-MATNR.                                " it assigns the material no of the reserved material to the var_mat_no.
  "endselect.
  tables MBEW.
  select * from MBEW where MATNR = var_mat_no.
    var_mov_price = MBEW-VERPR.                         " it assigns moving price to var_mov_price.
  endselect.
  shift var_mat_no left deleting leading '0'.
  move RESB-RSNUM to itab1-field1.
  modify itab1 from itab1.
  move RESB-RSPOS to itab1-field2.
  modify itab1 from itab1.
  move var_mat_no to itab-field3.
  modify itab1 from itab1.
  tables MAKT.
  select * from MAKT where MATNR = RESB-MATNR.
    move MAKT-MAKTX to itab1-field4.
    modify itab1 from itab1.
    endselect.
  move var_qty to itab1-field5.
  modify itab1 from itab1.>
plz guide me to slve it.i am new to abap
Edited by: achalmehra on Sep 21, 2009 10:02 AM

Answer 1

Hi,
move RESB-RSNUM to itab1-field1.
modify itab1 from itab1.
what is itab?? is it an internal table??
if so, how can you access its field directly??