Hi Chirag, I think you are looking to use the wait value of the semaphore attribute. Beware of the timeout though... You may combine with the other semaphore attributes if needed <xs:attribute name="semaphore-wait-seconds" type="xs:int" default="300"/> <xs:attribute name="semaphore-sleep" type="xs:int" default="500"/>
HTH Jacques Please use rather the user MLfor such questions, thanks... ----- Original Message ----- From: Chirag Manocha To: jacques.le.r...@les7arts.com Sent: Thursday, June 17, 2010 9:11 AM Subject: Services semaphore attribute Hi Jacques, Can you please tell me about semaphore attribute of service tag. The scenario is when I am getting multiple request(request is calling a service) then I want the service to be called in sequence rather than parallel, If you can provide some links to documentation that will be help, Thanks and Regards -- Chirag Manocha +91-98735-47457