A new value is not to be assigned to the field symbol

[former_member355263]

Hi,

i defined field symbol  like this:

   FIELD-SYMBOLS:   <LFS_01> .

i changed it_demand-fsc_seq field type from num2 to num3..i have below loop..

LOOP AT it_demand.

     MOVE-CORRESPONDING it_demand TO IT_OUT.

     CONCATENATE  'IT_OUT-DMD'  it_demand-fsc_seq INTO L_FIELD_NAME.

     ASSIGN  (L_FIELD_NAME)  TO <LFS_01>.

     <LFS_01> = it_demand-demand.-------> on here.. an error accured.

     COLLECT IT_OUT.

     CLEAR IT_OUT.

   ENDLOOP.

Error message...ST22

A new value is to be assigned to the field "<LFS_01>", although this field is

entirely or partly protected against changes.

The following are protected from change:

- Character literals or numerical literals.

- CONSTANTS.

- Parameters of the category IMPORTING REFERENCE in functions and

   methods.

Before i changed it_demand-fsc_seq field type, there was no error..How can i fix that ?

[Former Member]

Hi,

try to change field type of it_demand-fsc_seq to character and try.

[matt]

The runtime objects to you changing the value of a field like IT_OUT-DMD<some_suffix>.

What is IT_OUT? How is it defined? Is it an importing parameter for example?

[former_member355263]

Hi,

i changed IT_OUT's related fields and problem was fixed.Thank you..

Best Regards.

[robson_soares]

Before moving the value to the field symbol check whether it was assigned. I think the value of L_FIELD_NAME does not exist.

[jrg_wulf]

Hi,

in your structure it_out, do the fieldnames match the pattern DMDnnn? Since you changed the type to num3 , the assign would search for field of e.g. name IT_OUT-DMD001.

If the fieldname is still DMD01, the assign would fail, leaving whatever was assigned to <LFS_01> before (if any).

Besides, it is never a good idea to use a dynamically assigned field-symbol whithout checking SY-SUBRC first.

Best regards - Jörg

[former_member355263]

Hi,

Thank you for your answer.:)

i changed  it_out fields from DMDnn to DMDnnn and problem was fixed..

Best regards..

[former_member200338]

I guess your field names are stored as IT_OUT-DMD01, IT_OUT-DMD02, IT_OUT-DMD03 ........ and so on.

When you change it_demand-fsc_seq  to numc3, it will result in IT_OUT-DMD001, IT_OUT-DMD002, IT_OUT-DMD003 ........ and so on.

These fields doesn't exist and hence you are receiving error message. Either change the name of fields or use numc2.

[former_member355263]

Hi,

Thank you for your answer..i changed as T_OUT-DMD001, IT_OUT-DMD002, IT_OUT-DMD003 ........ and so on.  Problem was fixed..

Best Regards..