Xml Validation

Hi

I am running the following:

DECLARE @h uniqueidentifier --conversation handle

DECLARE @msg xml; --will hold the message

BEGIN DIALOG CONVERSATION @h

FROM SERVICE [ewx.co.za/Service/store001_ewx_sb_service]

TO SERVICE 'ewx.co.za/Service/ewx_sb_hub_service'

ON CONTRACT [ewx.co.za/Contract/ewx_Contract];

SET @msg = '<InventoryUpdate>

<TitleId>STORE001TEST1</TitleId>

<Quantity>7777</Quantity>

</InventoryUpdate>';

SEND ON CONVERSATION @h

MESSAGE TYPE [ewx.co.za/Message/ewx_sendmsg](@msg);

Now to test errors comming back on the aueue i sed to make the xml tags wrong, then the target would send a error back on the queue with xml validation failed (both queues have validation well_formed_xml). However now in testing i cannot even send the message i get an invalid xml error straight away, i am not sure why this is , i know the xml is not valid but the send used to work and i would get an erro rback, as the xml is validated by the ttarget, but this no longer works it ails strainght away, with no thing in any queue. What could be causing this ?

Thanx