the problem has been solved:-)

the problem was here (with certficates and klient_user) every instance must have own user, and this user must have grants to other objects.

In my code has...

-- From klient

DECLARE @Conv_Handler uniqueidentifier

DECLARE @OrderMsg xml

BEGIN DIALOG CONVERSATION @Conv_Handler

FROM SERVICE [My_klientService]

TO SERVICE 'My_server_Service'

ON CONTRACT [My_klientContract];

SET...

For server:

use master

GO

/*Clear data*/

IF EXISTS(SELECT * FROM sys.endpoints WHERE name = 'SB_2008_Endpoint')

BEGIN

DROP ENDPOINT SB_2008_Endpoint

END

GO

IF EXISTS(SELECT * FROM sys.certificates WHERE name =...

in the first front end-> There is not complicate - Front end send message to "Queue" on the back end and the back end send the confirm to "Queue" on...