FRM-30351: No list elements defined for list item.

Question

Hello!
i have a list_item with name NOMBRE and in a NEW_FORM_INSTANCE trigger i have the following pl/sql block to populate it:
declare
     grp_producto recordgroup := find_group('RECORD_PRODUCTO');
     lst_item item := find_item('PRODUCTO.NOMBRE');
     status number;
begin
     status := populate_group(grp_producto);
     clear_list(lst_item);
     populate_list(lst_item,grp_producto);
end;
when i run the form, this message appear
FRM-30351: No list elements defined for list item.
List NOMBRE
and the list appear without elements
...can somebody explain me the solution or if i have to do another thing to populate the list?
Thanks

Answer 1

Hi Duncan!
i rewrote the manually code and agregate the clear_list function that i think you refer with "Make sure that the block is empty before you do this". This work the first time but in the next time a change that i do in the database isn't reflected in the list, i think that my cursor mantain the old information, well, can you indicate me some way to clear the cursor or something similar? or explain me another solution?
thanks so much!
declare
nombre_producto soportebwv2.producto.nombre%type;
lst_item item;
i number:=1;
CURSOR cur IS
select nombre
from soportebwv2.producto;
begin
lst_item:= find_item('PRODUCTO.NOMBRE');
clear_list(lst_item);
open cur;
loop
fetch cur into nombre_producto;
exit when cur%NOTFOUND;
add_list_element(lst_item, i, nombre_producto, nombre_producto);
i:=i+1;
end loop;
close cur;
end;