Addinng column for database - Datamasking it errors

So far created user in ATP and granted privileges and has also granted policies for data masking

Data Masking: "Insufficient Privileges" when attempting to run scheduled Data Masking job (Doc ID 2804405.1)

Now while creating data masking policy and then adding column to it. It errors out as

{column:ATPTEST.INFO.ID,error:Operation failed due to insufficient privileges}

Table Infor:-

create table info ( Name varchar2(20), id number (9), Section varchar2(20));

insert into info values ('XXXX',100,'A');

insert into info values ('YYYY',101,'B');

insert into info values ('ZZZZ',102,'C');