Problem while saveing in Table Control.

Question

Hi
I am geting error while saving data in table control.
This table contol is pop up window at end of screen .
user enter qty & uom in TC..
Error i am getting is...
Field symbol has not been assigned.
Error analysis                                                                               
The system tried to access an anasigned field symbol (data segment        
number 32772).                                                                               
The field symbol is no longer assigned, because a Unicode program         
previously tried to set the field symbol using an ASSIGN statement with   
an offset/length declaration. The memory addressed in this offset/length  
declaration, however, no longer lay within the valid range.                                                                               
Information on where terminated                                                                               
The termination occurred in the ABAP program "SAPLOMCV" in                
"CONVERSION_EXIT_MATN1_INPUT".                                           
i Have coded like this..
MODULE USER_COMMAND_0112 INPUT.
  CASE OKCODE.
    WHEN 'BACK' or 'CANCEL'.
      SET SCREEN 0.
This iti is contain data which diplay in TC
     when 'DISPLAY'.
          LOOP AT ITI.
          read table iti with key ingr_code = iti-ingr_code
                                  ingr_desc = iti-ingr_desc.
          wka1-ingr_code = iti-ingr_code.
          wka1-ingr_desc = iti-ingr_desc.
          wka1-conc = iti-conc.
          wka1-quantity = iti-quantity.
          wka1-uom = iti-uom.
        append wka1 to itf.
        ENDLOOP.
     WHEN 'SAV'.
      loop at itf where check = 'x' .
              update zacg_ns
                set ingr_code = itf-ingr_code
                col_name = itf-ingr_desc
                conc = itf-conc
                quantity = itf-quantity
                  UOM =  itf-UOM
                  ru = itf-ru
                  where ingr_code = itf-ingr_code
                  and col_name = itf-ingr_desc.
    zacg_ns-ingr_code = itf-ingr_code.
   zacg_ns-col_name = itf-ingr_desc.
   zacg_ns-conc = itf-conc.
  zacg_ns-quantity = itf-quantity.
zacg_ns-UOM = itf-UOM.
update zacg_ns.
                 endloop.
                 leave program.
              ENDCASE.
          ENDMODULE.                 " USER_COMMAND_0112  INPUT
MODULE read_table_control INPUT
MODULE read_table_control INPUT.
  MODIFY itf  INDEX tc-current_line.
ENDMODULE.                    "read_table_control INPUT
*&  Include           ZACG_NS_2                                        *
*&      Module  STATUS_0111  OUTPUT
      text
MODULE STATUS_0111 OUTPUT.
  SET PF-STATUS 'ZNEWSHADE'.
  SET TITLEBAR 'ZNS'.
ENDMODULE.                 " STATUS_0111  OUTPUT
*&      Module  STATUS_0112  OUTPUT
      text
MODULE STATUS_0112 OUTPUT.
  SET PF-STATUS 'ZTC'.
SET TITLEBAR 'xxx'.
  DESCRIBE TABLE itf LINES lines.
  tc-lines = lines.
ENDMODULE.                 " STATUS_0112  OUTPUt
                                                                                PROCESS BEFORE OUTPUT.
MODULE STATUS_0112.
LOOP at itf WITH CONTROL TC CURSOR tc-current_line.
    MODULE TC_PBO  .
  ENDLOOP.
PROCESS AFTER INPUT.
  MODULE CANCEL AT EXIT-COMMAND.
LOOP at itf .
    module read_table_control.
  ENDLOOP.
MODULE USER_COMMAND_0112.
Can any one help me..

Answer 1

Hi,
Did you enter that filed later after creating the table control?
You check in the element list whether for that element u have an entry or not..
Regards,
Nishant