Actually i setup an WDS For windows OS Deployment. DHCP Server is configured in AD Server (We have 2 AD Server). Windows OS is deploying is fine, When the IP Address is leasing from primary DHCP Server to client system and same if the IP Address is leasing from secondary DHCP Server to client system the OS Deployment is not happened. I have attached the error screenshot.

I have reconfigure the DHCP Scope option (66 & 67) and i have verified the boot file also.