Difference between Static and Dynamic Field Symbol

[Former Member]

Hi All,

Can you please suggest the syntax for assigning field symbols for the below requirement:

field-symbols: <fs_zzbol> type any.

data : l_zzbol(30).

if sy-tcode eq 'ME21N'.

l_zzbol = '(SAPLMEPO)EKKO-ZZBOL'.

elseif sy-tcode eq 'ME21'.

l_zzbol = '(SAPMM06E)EKKO-ZZBOL'.

endif.

Now my doubt is : how to assign l_zzbol to <fs_zzbol>?

Like 1. assign l_zzbol to <fs_zzbol>.

or 2. assign (l_zzbol) to <fs_zzbol>.

It would be helpful if you suggest me the reason.

Thanks,

Sanjeet

[Former Member]

Hi All,

Can you please suggest the syntax for assigning field symbols for the below requirement:

field-symbols: <fs_zzbol> type any.

data : l_zzbol(30).

if sy-tcode eq 'ME21N'.

l_zzbol = '(SAPLMEPO)EKKO-ZZBOL'.

elseif sy-tcode eq 'ME21'.

l_zzbol = '(SAPMM06E)EKKO-ZZBOL'.

endif.

Now my doubt is : how to assign l_zzbol to <fs_zzbol>?

Like 1. assign l_zzbol to <fs_zzbol>.

or 2. assign (l_zzbol) to <fs_zzbol>.

It would be helpful if you suggest me the reason.

Thanks,

Sanjeet

[Former Member]

Hi,

Take that field l_zzbol as one of fields in that fileld symbol.

than move that fileld (l_zzbol) tho that filed symbol <fs_zzbol>-zzbol. (filed what you taken )

and modify that table with that field symbol with transporting that fileld.

Thanks

[Former Member]

There is no field attached to the <fs_zzbol>.

This has been just defined as :

field symbols :<fs_zzbol> type any.

So I can not modify using transporting key word.

It is basically the concept of Static and Dynamic Field Symbol that I am not able to diffrerentiate.

Thanks,

Sanjeet

[former_member156446]

Hi Sanjeet... try this way..

field-symbols: <fs_zzbol> type any.

if sy-tcode eq 'ME21N'.
assign '(SAPLMEPO)EKKO-ZZBOL' to <fs_zzbol>.
elseif sy-tcode eq 'ME21'.
Assign '(SAPMM06E)EKKO-ZZBOL' to <fs_zzbol>.
endif.

[MarcinPciak]

Hi Sanjeet,

Basically when you assing field to field symbol you write

assign field_name to <field_symbol>. 

In this case you don't know at runtime what field you want to take the value from, (definitelly it is not field_name but name of the field which is in the field_name

i.e. (SAPLMEPO)EKKO-ZZBOL ). Therefore you can write this:

assing ('(SAPLMEPO)EKKO-ZZBOL') to <field_symbol>.

...which in turn can be replaced with.

l_zzbol = '(SAPLMEPO)EKKO-ZZBOL'.
assign (l_zzbol) to <fs_zzbol>.

Golden rule:always ask yourself if you know which field you are addressing. If you can't statically evaluate it ( field_name is not of interest here but what is in it), you must put it in brackets (meaning system will get its name during runtime from field_name ).

Hope it will clarify how to use field symbol.

Regards

Marcin