Trigger Modification

This was my origibnal trigger. I added another condition to it. Now it is not giving me any compilation or runtime errors but it is not doing the required update. Any suggestions?

Original Trigger

WHENEVER SQLERROR EXIT SQL.SQLCODE;
CREATE OR REPLACE TRIGGER ship_frt_sts_upd
BEFORE
UPDATE OF STATUS ON SHIPMENT
FOR EACH ROW
WHEN (new.status in ('A', 'T', 'P'))
DECLARE cnt integer;
BEGIN
SELECT count(*)
INTO cnt
FROM ord o, ord_load ol
WHERE :new.id = ol.load_id
AND :new.sched_num = ol.sched_num
AND ol.stop_num = 1
AND ol.ord_id = o.id
AND ol.sched_num = o.sched_num
AND (o.pass_char2 != 'RTD');

if (cnt > 0) then
:new.status := 'L';
end if;
END;
/
EXIT SUCCESS;

New Trigger
WHENEVER SQLERROR EXIT SQL.SQLCODE;
CREATE OR REPLACE TRIGGER frt_sts_ship_bur
BEFORE
UPDATE OF STATUS ON SHIPMENT
FOR EACH ROW
WHEN (new.status in ('E','K','P','T','Y','X'))
DECLARE
orm_cnt integer;
rtd_cnt integer;
temp_bol_id varchar2(17);
BEGIN
if (:new.status in ('K','Y')) then
SELECT count(*) INTO orm_cnt
FROM ord o, ord_load ol
WHERE :new.id = ol.load_id
AND :new.sched_num = ol.sched_num AND ol.stop_num = 1
AND ol.ord_id = o.id AND ol.sched_num = o.sched_num
AND (o.pass_char2 = 'ORM');
if (orm_cnt > 0) then
:new.status := 'Z';
end if;
end if;

if (:new.status in ('E','P','T','X')) then
SELECT count(*) INTO rtd_cnt
FROM ord o, ord_load ol
WHERE :new.id = ol.load_id
AND :new.sched_num = ol.sched_num AND ol.stop_num = 1
AND ol.ord_id = o.id AND ol.sched_num = o.sched_num
AND (o.pass_char2 != 'RTD');
if (rtd_cnt > 0) then
:new.status := 'Z';
end if;
end if;

if ((:new.status in ('K','Y','T')) and
(ld.external_bol is null)) then
SELECT '00000491'||SUBSTR(bol_id,4,8)||
to_char(mod(10 - (mod((((to_number(SUBSTR(bol_id,5,1)) +
to_number(SUBSTR(bol_id,7,1)) +
to_number(SUBSTR(bol_id,9,1)) +
to_number(SUBSTR(bol_id,11,1)) + 5)*3) +
((to_number(SUBSTR(bol_id,4,1)) +
to_number(SUBSTR(bol_id,6,1)) +
to_number(SUBSTR(bol_id,8,1)) +
to_number(SUBSTR(bol_id,10,1)) + 9))),10)),10))
INTO temp_bol_id
FROM shipment, load_stop
WHERE id = :new.id
AND shipment.sched_num = :new.sched_num
AND shipment.id = load_stop.load_id
AND shipment.sched_num = load_stop.sched_num
AND stop_type = 'DL';
:new.external_bol := temp_bol_id;
end if;

END;
/
EXIT SUCCESS;

Your trigger seems to work fine, very hard to predict about the logical mistake. What is your table staucture?. I mean I have seen in your trigger that you are comapring value with a String, for example:

AND stop_type = 'DL';

Please first trim/remove the all space before comparing it with any string if stop_type length is defined more than two character in table and others as well.