View' Per-Navigation validation_Open UI

Hello,

Can you please suggest me on below:

We have simple requirement, but we want implemented via Open UI:

To stop user to move out of Siebel view, if user have not provided some related info.

e.g.: User must provide Note details under Service Request before moving\navigating to other view, we can do it via script in Application's per navigation but

we are looking for non srf solution, Open UI method's can help?.

I believe in Runtime even also, no any event do exist which can provide per_naigation validation.

Thanks in Advance !!

Vivek C