Missing or invalid option

SET SERVEROUTPUT ON; ACCEPT redeem_id CHAR PROMPT 'Enter Redeem ID: '; ACCEPT matric_num CHAR PROMPT 'Enter Matric Number: '; ACCEPT prod_id CHAR PROMPT 'Enter Product ID: '; DECLARE v_prod_name VARCHAR2(100); v_req_points NUMBER; v_total_points NUMBER; v_remaining_points NUMBER; BEGIN SELECT prod_name INTO v_prod_name FROM cat_management WHERE prod_id = :prod_id; SELECT req_points INTO v_req_points FROM cat_management WHERE prod_id = :prod_id; SELECT total_points INTO v_total_points FROM point_calc WHERE matric_num = :matric_num; v_remaining_points := v_total_points - v_req_points; INSERT INTO prod_redemption (redeem_id, matric_num, redeem_date, redeem_time, prod_id, prod_name, req_points, remaining_points) VALUES (:redeem_id, :matric_num, SYSDATE, TO_CHAR(SYSDATE, 'HH24:MI:SS'), :prod_id, v_prod_name, v_req_points, v_remaining_points); DBMS_OUTPUT.PUT_LINE('Redemption successfully registered.'); DBMS_OUTPUT.PUT_LINE('Redeem ID: ' :redeem_id); DBMS_OUTPUT.PUT_LINE('Matric Number: ' :matric_num); DBMS_OUTPUT.PUT_LINE('Product ID: ' :prod_id); DBMS_OUTPUT.PUT_LINE('Product Name: ' v_prod_name); DBMS_OUTPUT.PUT_LINE('Remaining Points: ' v_remaining_points); DBMS_OUTPUT.PUT_LINE('Current Date and Time: ' TO_CHAR(SYSDATE, 'DD-Mon-YYYY HH24:MI:SS')); END; /