As per customer need we provide them Custom Host Name Workflow so can they deployed machine as per there naming convention.
but the problem is if we attached AD OU Policy to blueprint/Business Group then Virtual Machines are Created in Default OU instead of required one.
if we deploy machine without custom host name workflow then virtual machines are successfully created in required OU.
If anyone having Same issue please guide/help us to come out of this issue.
NOTE: Customer is not ready to run script in custom spec of vCenter server for same.