A sample DDL script for stored procedure with custom types as input/output params is shown below for clarity
 

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create or replace
TYPE vv_customer_sync_rec1 AS OBJECT
(response_code                    NUMBER,
 response_message                 VARCHAR2(1000)
 );

 create or replace
TYPE vv_customer_sync_tab1 AS TABLE OF vv_customer_sync_rec1;

create or replace
PROCEDURE process_customers1(p_customer_tab    IN OUT vv_customer_sync_tab1
                           ,l_account_token IN OUT vv_customer_sync_tab1,
                           ,l_account_number  OUT VARCHAR2
                           ,l_party_id        OUT NUMBER
                           ,l_cust_account_id OUT NUMBER
                           ,x_return_status   OUT VARCHAR2
                           ,x_msg_count       OUT NUMBER
                           ,x_msg_data        OUT VARCHAR2 ) as

                           BEGIN
l_account_number:=1234;
DBMS_OUTPUT.PUT_LINE(l_account_number);

END process_customers1;

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