I’m trying to pass associative array as argument to a procedure. When I’m compiling I’m getting error

PL/SQL: Statement ignored PLS-00382: expression is of wrong type 

Could anyone please tell me what is wrong in my code.

    proceudre main()      is_net_trad_found NUMBER;     is_net_compensated NUMBER;     net_trade_index NUMBER;     iLoop NUMBER;          TYPE net_trade_rec IS RECORD         (            net_trade_tag   NUMBER(10),            net_comp_status VARCHAR2(1)         );          TYPE trade_rec IS               TABLE OF net_trade_rec INDEX BY BINARY_INTEGER;          net_trade_obj trade_rec;         /* nested proceudre */          PROCEDURE is_trade_exist(in_net_trade_obj     trade_rec,                                  in_loc_netg_trad_tag IN  NUMBER,                                  in_net_trad_found    OUT VARCHAR2,                                  in_net_compensated   OUT VARCHAR2)          IS            loc_loop NUMBER;            ern   CONSTANT POSITIVE := 059;          BEGIN             in_net_trad_found  := 'N';            in_net_compensated := 'N';             loc_loop := in_net_trade_obj.FIRST;            WHILE (loc_loop IS NOT NULL) LOOP                IF in_net_trade_obj(loc_loop).net_trade_tag = in_loc_netg_trad_tag THEN                    in_net_trad_found := 'Y';                   IF in_net_trade_obj(loc_loop).net_comp_status = 'Y'                    THEN                      in_net_compensated := 'Y';                   END IF;                    EXIT;                END IF;               loc_loop := in_net_trade_obj.NEXT(loc_loop);            END LOOP;          EXCEPTION            WHEN OTHERS THEN               raise_application_error(-(20000+ern),SQLERRM);          END;      BEGIN      net_trade_index := net_trade_index+1;     net_trade_obj(net_trade_index).net_trade_tag   := loc_netg_trad_tag;     net_trade_obj(net_trade_index).net_comp_status := is_net_compensated;  iLoop := net_trade_obj.FIRST; IF iLoop THEN     is_trade_exist(net_trade_obj,                    loc_netg_trad_tag,                    is_net_trad_found,                    is_net_compensated);  END IF;     END; 

TYPE is not declared globally. the above main procedure is inside a package.