Hi Dev,
Issue is resolve now.
Problem : I have used multiple condition under beneath of first contdition step. In multiple condition step i have not giving any contion in OTHER part. thats why the WF giving the error at the vary first step.
Now i came to know that in the beginning only WF check all Condition steps if any one have issue in value assignment it will give error.
Thanks Dev, I really appriciate your affort.
Thanks
Imran