Problem: after inser trigger encounter error sql0348

Env:db2 v8 + fp 13 + win xp

Description:
we build two after insert triggers DB2.TRG1, DB2.TRG2 on base table
DB2.TEST1,
insert data into DB2.TEST1 encounter error sql0348

but we re-create trigger DB2.TRG2 before DB2.TRG1 and  re-insert data
into DB2.TEST1 successfully.

did anyone can help to advice why db2 create triggers sequence will
get difference result ?

sample case as follow:
==========================================================
connect sample @

drop view db2.sum @
drop trigger DB2.TRG1  @
drop trigger DB2.TRG2  @
drop table  DB2.Q1  @
drop table  DB2.Q2  @
drop table  DB2.TEST1  @
drop table  DB2.T1  @
drop table  DB2.T2  @
drop sequence db2.test_1_seq  @

CREATE SEQUENCE DB2.TEST_1_SEQ AS INTEGER
    MINVALUE 1 MAXVALUE 2147483647
    START WITH 1 INCREMENT BY 1
    CACHE 10000 CYCLE NO ORDER @

create table db2.t1 (id int, name varchar(5), dep varchar(5), code
int )  @
create table db2.t2 (id int, name varchar(5), dep varchar(5), code
int )  @
create table DB2.TEST1 ( ID INT, NAME CHAR(10))   @
create table DB2.Q1  ( ID INT, NAME CHAR(10))   @
create table DB2.Q2  ( ID INT, NAME CHAR(10))  @

create view db2.sum ( id, name, code )
as
select id, name, dep
from db2.t1
where dep='A00'
union all
select id, name, dep
from db2.t1
where dep='B00' @

create trigger DB2.TRG1
    after insert on DB2.TEST1
    referencing
    new as nw_row for each row
    mode db2sql
    BEGIN ATOMIC
    IF (  (select count(*) from syscat.indexes) > 10 )
    THEN
        insert into DB2.Q1 (ID, NAME)
        values (
        (select count(*) from  DB2.SUM),
        -- nw_row.ID,
        nw_row.NAME)  ;
    ELSE
        insert into DB2.Q1 (ID, NAME)
        values (  (500+nw_row.ID),
        nw_row.NAME)  ;
    END IF;
    END  @

create trigger DB2.TRG2
    after insert on DB2.TEST1
    referencing
    new as nw_row for each row
    mode db2sql
    BEGIN ATOMIC
        insert into DB2.Q2 (ID, NAME)
        values     ( NEXTVAL FOR DB2.TEST_1_SEQ,
            nw_row.NAME) ;
    END  @
==========================================================
Insert data:
db2 connect to sample
db2 "insert into db2.test1 values(11111,'xxyyzz') "
* will get error  sql0348

if re-create trigger DB2.TRG2 before DB2.TRG1 , the trigger will
successfully without error.

Thanks