Повторяющиеся поля в RECORD, TABLE или списке аргументов не допускаются

Im получение ошибки для моей хранимой процедуры... любая идея, как ее решить?

ПРОЦЕДУРА:

CREATE OR REPLACE PROCEDURE prc_medic_check_status(v_task_id IN VARCHAR, v_request_id IN VARCHAR, v_task_desc IN VARCHAR, v_task_status IN VARCHAR) IS v_task_id task.task_id%TYPE;

v_request_id task.request_id%TYPE;

v_medical_id Varchar(30);

v_medical_status Varchar(30);

BEGIN
SELECT request_id INTO v_request_id
FROM Request
WHERE request_type = "Medical";


SELECT task_id INTO v_task_id
FROM task
WHERE request_id = v_request_id ;


SELECT medical_status INTO v_medical_status
FROM Medical m,
     medicalRequest mr,
     Request r
WHERE mr.request_id = r.request_id
  AND mr.medical_id = m.medical_id;

IF (v_medical_status = "Available") THEN
UPDATE Task
SET task_status = "Done"'enter code here
WHERE request_id = v_request_id;

DBMS_OUTPUT.PUT_LINE('Medical Task Done');

ELSE DBMS_OUTPUT.PUT_LINE('Medical Task Not Done');

DBMS_OUTPUT.PUT_LINE('Due To The Medical Product Is Currently Not Available');

END IF;

END;

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