Thanks Rakesh,
no the work order is not created as I am trying to create work order and then trying to change parameter from release to never, release is coming as default from the customizing setting and the testing I am doing it is behaving differently for one plant it is changing from release to never and for other plant it is not changing.
I worked with developer but no luck so far seems some other either config or master data is leading to this behavior.
any other suggestions.....
Regards,
Shailendra