CREATE OR REPLACE TYPE test1_type AS OBJECT
(
  SOURCE_ID NUMBER(10),
  ENTITY_ID_CODE   VARCHAR2(3 Byte)
)

CREATE OR REPLACE TYPE test1_type _tbl
AS TABLE OF test1_type;

CREATE OR REPLACE TYPE test2_type AS OBJECT
( 
  RECEIVER_ID NUMBER(10),
  SOURCE_ID NUMBER(10)
)

CREATE OR REPLACE TYPE test2_type _tbl
AS TABLE OF test2_type;

CREATE OR REPLACE TYPE wrapper_type AS OBJECT
(
  test_nested_input1   test1_type_tbl,
  test_nested_input2   test2_type_tbl
)

CREATE OR REPLACE TYPE wrapper_type _tbl
AS TABLE OF wrapper_type;

create table REALMED_CORP_NESTED_TABLE
 (
  id INTEGER Primary Key,
  Company_Name VarChar2(20),
  wrapper_rec wrapper_type_tbl
 )
 NESTED TABLE wrapper_rec STORE AS nested_wrapper_rec
(NESTED TABLE test_nested_input1 STORE AS nested_Input1_tab
 NESTED TABLE test_nested_input2 STORE AS nested_Input2_tab);

insert into REALMED_CORP_NESTED_TABLE 
values
(001,
'c12',
 wrapper_type_tbl(wrapper_type(test1_type_tbl(test1_type(12,'t'))),test2_type_tbl(test2_type(12,12)))));

SQL> insert into REALMED_CORP_NESTED_TABLE 
  2  values
  3  (001,
  4  'c12',
  5   wrapper_type_tbl(
  6     wrapper_type(
  7       test1_type_tbl(test1_type(12,'t')),
  8       test2_type_tbl(test2_type(12,12))
  9     ))
 10  );

1 row created.

CREATE OR REPLACE PROCEDURE SP_REGION_TAB_SELECT
(
 OUT_P1 OUT NUMBER,
 OUT_P2 OUT VARCHAR2,
 OUT_P3 OUT nt_country_typ
 )
AS
BEGIN 
Select region_id ,region_name,countries into OUT_P1,OUT_P2,OUT_P3 from region_tab;
End;

CREATE OR REPLACE PROCEDURE SP_REALMED_CORP_SELECT
(
 OUT_P1 OUT INTEGER,
 OUT_P2 OUT VARCHAR2,
 OUT_P3 OUT wrapper_type_tbl
 )
AS
BEGIN 
Select id,Company_Name,wrapper_rec into OUT_P1,OUT_P2,OUT_P3 from REALMED_CORP_NESTED_TABLE;
End;

SQL> Execute SP_REALMED_CORP_SELECT;
BEGIN SP_REALMED_CORP_SELECT; END;

      *
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00306: wrong number or types of arguments in call to
'SP_REALMED_CORP_SELECT'
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

SQL> select * from REALMED_CORP_NESTED_TABLE;

        ID COMPANY_NAME
---------- --------------------
WRAPPER_REC(TEST_NESTED_INPUT1(SOURCE_ID, ENTITY_ID_CODE), TEST_NESTED_INPUT2(RE
--------------------------------------------------------------------------------
       123 t
WRAPPER_TYPE_TBL(WRAPPER_TYPE(TEST1_TYPE_TBL(TEST1_TYPE(12, 't')), TEST2_TYPE_TB
L(TEST2_TYPE(123, 124))))

         1 c12
WRAPPER_TYPE_TBL(WRAPPER_TYPE(TEST1_TYPE_TBL(TEST1_TYPE(1, 'a')), TEST2_TYPE_TBL
(TEST2_TYPE(1, 1))))