Message for multiple unsaved transactions before ending the latest one

Hello Experts,

We have a scenario wherein the call-centre agent is creating a Sales Order. He doesnu2019t save it, and opens another one on top of it. Now he cancels the second one also, and if BACK button is clicked now the earlier unsaved SO can be seen. This means that the earlier SO was being saved in some buffer.

Now if the agent had ended the transaction after cancelling the second SO, no error message comes informing him that thereu2019s one more below it, which is unsaved. The requirement is that if the agent is ending the transaction at the topmost SO, he should be informed there are N number of SOs below it which are unsaved through some error message preferably.

Please guide me as to how I find out where the unsaved transactions are being buffered, and how can I go ahead with implementing such a functionality.

Thanks,

Richa