Not able to save the new order

Hi,

In Service Order view I create one service order and save it.

Then I click on New button to create one more service order.

After entering the data for new service order, through Breadcrumb history I navigate to previous service order and come back to the new service order. Then I save the new service order by clicking on Submit button. Not sure whether it gets saved or not. And the transaction number is also not generated.

Does anyone tell what's the reason and how I can solve this problem.

Thanks

PVD