ORA-06530: Reference to uninitialized composite - Similar questions reviewed but still unclear - oracle

Question

I'm getting this error:
Error while executing the procedure : ORA-06530: Reference to uninitialized composite
This is probably a common error for Oracle beginners like me. I looked at similar posts but can't figure out how to apply the answers to my code, which follows.
I have a table of:
CREATE OR REPLACE TYPE "FDS_APPS"."TY_AUDIT_COL_TBL" IS
TABLE OF fds_apps.ty_audit_col_obj;
of this TYPE
CREATE OR REPLACE TYPE "FDS_APPS"."TY_AUDIT_COL_OBJ" AS OBJECT (
application VARCHAR2(30),
module VARCHAR2(30),
created_by VARCHAR2(50),
creation_date DATE
);
I want to create a a test procedure to call the following procedure while passing in the input values with focus, of course on the p_audit_col parameter of type ty_audit_col_tbl.
PROCEDURE check_mv_status (
o_outcome_type OUT VARCHAR2,
p_audit_col IN fds_apps.ty_audit_col_tbl,
p_refresh_ind IN CHAR DEFAULT 'N',
p_mv_result OUT NOCOPY fds_apps.ty_result_tbl
) AS...
Here is my calling procedure:
CREATE OR REPLACE PROCEDURE FDS_APPS.JUNKPROC2
AS
O_OUTCOME_TYPE VARCHAR2(32767);
P_AUDIT_COL TY_AUDIT_COL_TBL;
P_REFRESH_IND CHAR;
P_MV_RESULT TY_RESULT_TBL;
BEGIN
P_AUDIT_COL := fds_apps.TY_AUDIT_COL_TBL();
P_AUDIT_COL.extend(1);
--Error occurs on the following line
P_AUDIT_COL(1).application := 'App';
P_AUDIT_COL(1).module := 'Module';
P_AUDIT_COL(1).created_by := 'MyID';
P_REFRESH_IND := 'N';
FIRM_RTBI_PKG.CHECK_MV_STATUS(O_OUTCOME_TYPE, P_AUDIT_COL, P_REFRESH_IND, P_MV_RESULT);
dbms_output.put_line('O_OUTCOME_TYPE=' || O_OUTCOME_TYPE);
END;
/
I get the error where indicated as a comment, when I try to assign a value to an element in the 1 record collection.
How can I overcome this error?

Answer 1

The syntax you are showing is for populating RECORDS, which is different than populating an OBJECT type.
Replace this:
P_AUDIT_COL(1).application := 'App';
P_AUDIT_COL(1).module := 'Module';
P_AUDIT_COL(1).created_by := 'MyID';
with this:
P_AUDIT_COL(1) := TY_AUDIT_COL_OBJ('App','Module','MyID',sysdate);
An object type variable needs to be initialized with a constructor