I have Postgres SQL function defined like below. It has a part where it runs a select query and has to store it in v_combination_exists variable. But it gives error in select statement.

ERROR:  Array value must start with "{" or dimension information.malformed array literal: "Check_ID1" 

ERROR:  malformed array literal: "Check_ID1"
SQL state: 22P02
Detail: Array value must start with "{" or dimension information.
Context: PL/pgSQL function abc.check_ids(character varying[]) line 19 at SQL statement

Function definition:

CREATE OR REPLACE FUNCTION abc.check_ids(
    id_values character varying[])
    RETURNS void
    LANGUAGE 'plpgsql'
    COST 100
    VOLATILE PARALLEL UNSAFE
AS $BODY$
DECLARE
    v_combination_exists text[];
BEGIN
...
                select id_value from abc.tableABC -- <-line 19
                    AND id_value = ANY(id_values)
                INTO v_combination_exists;
    
            IF v_combination_exists exists THEN
                RAISE EXCEPTION 'The combination of provided fields already exists : %s', v_combination_exists ;
            END IF;
END;
$BODY$;

The way I am calling this function:

select  abc.check_id(p_client_id_values := ARRAY['Check_ID1','Check_ID2']);

Can someone please help in resolving the error?