Oracle APEX gives error 'NO DATA FOUND' when trying to fetch value of disabled field of tabular form

I am trying to update a table using update query from oracle apex process. For that I needed a value to be fetch from a tabular form. But that feild is currently disabled (Not editable, value still exist), and here I'm getting error 'ORA-01403: no data found'. If I enabled that field then problem goes (But field will be editable, I don't want to make that field editable).

That data (data of disabled) is already being saved on table(before that field getting disabled). Now I've written a condition for bypassing that error (like. IF APEX_APPLICATION.G_F03(i) IS NOT NULL THEN). But still I'm getting this same error (mentioned above).

So as per shown in below code 'coz of apex_application.g_f03(i) is disabled it gives me error 'ORA-01403: no data found', whereas apex_application.g_f04(i) is not giving me any error. and if I enabled apex_application.g_f03(i) field, then error will be gone.

FOR i IN 1 ..apex_application.g_f01.count LOOP   

        if ((:P2_M1= 'f03') AND (apex_application.g_f03(i) IS NOT NULL)) then 
            ------------------------------------------------------------------------------------
            select  count(*) into v_count from SCHEMA1.TABLE1 
            where   ATTRIBUTE_CODE  =   apex_application.g_f02(i)   
            and     header_id       =   :P2_X_HEADER_ID
            and     rating_001 is not null ;
            ------------------------------------------------------------------------------------
            update  SCHEMA1.TABLE1 
            set     LAST_UPDATE_DATE =  sysdate,
                    LAST_UPDATED_BY  =  :F2221_USER_ID,
                    RATING_001       =  apex_application.g_f03(i),
                    STATUS           =  'NEW' 
            where   ATTRIBUTE_CODE  =   apex_application.g_f02(i)
            and     header_id       =   :P2_X_HEADER_ID;
            --------------------------------------------------------------
        END IF;  

        if ((:P2_M2 = 'f04') AND (apex_application.g_f04(i) IS NOT NULL)) then

            ------------------------------------------------------------------------------------
            select count(*) into v_count from SCHEMA1.TABLE1 
            where  ATTRIBUTE_CODE   =   apex_application.g_f02(i)   
            and    header_id        =   :P2_X_HEADER_ID
            and    rating_002 is not null ;    
            ------------------------------------------------------------------------------------
            update  SCHEMA1.TABLE1 
            set     LAST_UPDATE_DATE=   sysdate,
                    LAST_UPDATED_BY =   :F2221_USER_ID,
                    RATING_002      =   apex_application.g_f04(i),
                    STATUS          =   'NEW' 
            where   ATTRIBUTE_CODE  =   apex_application.g_f02(i)   
            and     header_id       =   :P2_X_HEADER_ID;
            ------------------------------------------------------------------------------------

        END IF; 

    end loop; 

I expected either to get the value of this apex_application.g_f03(i) field (even if it is disabled) or bypass it.

This is standard behaviour of any HTML form, not just APEX. If any input is set to disabled then its value is not posted when the form is submitted. If you can set it to readonly instead then the user will still be unable to edit it, but its value will be posted on submit.