Duplicate message exception

Hi,

I am using WebMethods MQ Adapter 6.0 on Integration Server 6.1
I have configured asynchronous notifier with publishable document & trigger to execute a flow service while a message is available on the queue.


Publishable Document Properties:

PUBLISHABLE: TRUE
BROKER DOC TYPE: PUBLISHABLE LOCALLY ONLY
DISCARD: FALSE
TIME TO LIVE: (Note: This property is disabled.)
STORAGE TYPE: GUARANTEED

Trigger Properties:

GENERAL____
ENABLED: TRUE
JOIN EXPIRES: FALSE
EXPIRES AFTER: (Note: This property is disabled.)

TRIGGER QUEUE_____
CAPACITY: 10
REFILL LEVEL: 4
ACKNOLEDGEMENT QUEUE SIZE: 1

DOCUMENT PROCESSING_____
PROCESSING MODE: CONCURRENT
MAX EXECUTION THREADS: 5

RETRIES ON ERROR_____
DELIVER UNTIL: MAX ATTEMPTS REACHED
MAX ATTEMPTS: 5
RETRY INTERVAL: 10 SECONDS

EXACTLY ONCE_____
DETECT DUPLICATES: FALSE
USE HISTORY: FALSE
HISTORY TIME TO LIVE: (Note: This property is disabled.)
DOCUMENT RESOLVER SERVICE: (Note: This property is disabled.)

This settings points out that duplicate detection is set OFF, although I am getting the following exception.

2004-11-29 16:41:40 CST [ISS.0098.0082E] Unable to persist Document:
MYMQ.Notifiers:GETQNotifierPublishDocument to Document Store: MYMQ.Triggers:GETQTrigger. Exception: com.wm.app.b2b.server.dispatcher.exceptions.DupeMsgException: com.wm.app.store.TSDupeMsgException: [BAT.0000.0032] duplicate message for store id MYMQ.Triggers:GETQTrigger in parent container id TriggerConsumer
2004-11-29 16:41:40 CST [ISS.0098.0024C] No Trigger available for incoming Document MYMQ.Notifiers:GETQNotifierPublishDocument. Rejecting Document

Can you guys assist me where I went wrong ?

Immediate help will be highly appreciated.

Regards,
Nilesh