Can't save plan data

Question

I have created a BPS application which called a characteristic Rel of type Exit.  My user exit is reading information from the level and is populating my layout based on what information it finds there.  My user exit is working correctly, however, I am not able to save any data.  I can see the data via listcube but just not in the layout. Please help.
This is my code:
create data lr_data like line of eth_chas.
  assign lr_data->* to <ls_data>.
read table ito_chasel into charSelLine with key CHANM  = 'ZHIEID'.
  read table charSelLine-T_CHARNG into rangeLine index 1.
   hieid = rangeLine-low.
  read table ito_chasel into charSelLine with key CHANM  = 'G_SUBCATS'.
  read table charSelLine-T_CHARNG into rangeLine index 1.
   hlevel = rangeLine-low.
     case hlevel.
       when '101'.
         flag = 12.
       when '102'.
         flag = 11.
       when '103'.
         flag = 10.
       when '104'.
         flag = 9.
       when '105'.
         flag = 8.
       when '181'.
         flag = 7.
     endcase.
   select  * from /BIC/HG_SUBBRND into corresponding fields of table COMBOS
        where hieid = hieid and parentid = flag.
  assign component 'G_SUBBRND' of structure <ls_data> to <g_subbrnd>.
  loop at combos into customer.
    <g_subbrnd> = customer-NODENAME.
    insert <ls_data> into table eth_chas.
  endloop.
endfunction.

Answer 1

Nyrvole,
I believe it has do with the infoobject settings of the Target Characteristic.  If you have checked the target char as "Attribute Only" in the general tab of the other characteristic then you will have this problem.  So remove the attribute check in the target char and then you should be fine.  Ofcourse maintain the attribute char in the main characteristic. 
Also read the online help below :
InfoObject is Exclusively an Attribute (Not Used in ICs)
If you set the attribute only indicator for a characteristic, it can only be used as a display attribute for another characteristic and not as a navigation attribute.
In addition, the characteristic cannot be included in InfoCubes.
It can be used in DataStore objects, InfoSets and characteristics as InfoProviders. In this InfoProvider, the characteristic is not visible during read access (for example, at runtime). This means that it is not available in the query. If the InfoProvider is being used as the source of a transformation or DTP, the characteristic is not visible.
Hope this helps...
Jason