ORA-38101: Invalid column in the INSERT VALUES Clause

create table tq84_src (
   id   number(7  ) primary key,
   val  number(5,2)
);

create table tq84_dst (
   id  number(7  ) primary key,
   val number(5,2)
);

merge into tq84_dst dst
      using (
         select
            id,
            val
         from
            tq84_src src
      ) src
      on (
         src.id = dst.id
      )
      when     matched then
               update set  dst.val = src.val
      when not matched then
               insert (id, val)
               values (id, val)   -- <<< correct here to "values(src.id, src.val)"
;

merge into tq84_dst dst
      using (
         select
            id,
            val
         from
            tq84_src src
      ) src
      on (
         src.id = dst.id
      )
      when     matched then
               update set  dst.val = src.val
      when not matched then
               insert (    id,     val)
               values (src.id, src.val)
;

drop table tq84_src;
drop table tq84_dest;