Error at transport in select option is not followed by itab or value list

Question

Hi All,
I have an issue with the following inner join. when i check with code inspector it is not showing any errors but i get the following error while transport.
"The In operator with SO_MATKL is followed neither by an Internal table nor by a value list".
This error appears after the system is unicode enabled is that it have any unicode significance please advice on this.
The following is the code snippet.
SELECT amatnr amtart aextwg amatkl bwerks bdispo b~ekgrp
    INTO TABLE tb_mara
    FROM mara AS a
   INNER JOIN marc AS b ON amatnr = bmatnr
   WHERE a~matnr IN so_matnr
     AND a~mtart IN so_mtart
     AND a~extwg IN so_extwg
     AND a~matkl IN so_matkl
     AND b~werks IN so_werks
     AND b~dispo IN so_dispo
     AND b~ekgrp IN so_ekgrp.

Answer 1

Hi Gopal
Am on UNICODE Enabled system and i dont have problem with below code. Please check, if you have used similar to this???
tables: mara, marc.
select-options: so_matnr for mara-matnr,
                so_mtart for mara-mtart,
                so_extwg for mara-extwg,
                so_matkl for mara-matkl,
                so_werks for marc-werks,
                so_dispo for marc-dispo,
                so_ekgrp for marc-ekgrp.
types: begin of t_mara,
         matnr type matnr,
         mtart type mtart,
         extwg type extwg,
         matkl type matkl,
         werks type werks_d,
         dispo type dispo,
         ekgrp type ekgrp,
       end of t_mara.
data: tb_mara type table of t_mara.
SELECT a~matnr a~mtart a~extwg a~matkl b~werks b~dispo b~ekgrp
       INTO TABLE tb_mara
       FROM mara AS a
       INNER JOIN marc AS b ON a~matnr = b~matnr
       WHERE a~matnr IN so_matnr
       AND   a~mtart IN so_mtart
       AND   a~extwg IN so_extwg
       AND   a~matkl IN so_matkl
       AND   b~werks IN so_werks
       AND   b~dispo IN so_dispo
       AND   b~ekgrp IN so_ekgrp.
Kind Regards
Eswar