Question

a different object with the same identifier value was already associated with the session

Answer 1

You need to change the code to end this error. You can try this session.merge(accountDetails). But by using this the data will be inserted in the database instead of getting updated 

Answer 2

.

Let’s take an example — if your company needs to share urgent or crucial information with employees, a Broadcast that pushes directly to employees’ phones would be much more effective than an email, which often goes unread for days.

Another factor to consider is your audience. Do they work at a desk and live in their inbox, or are they on the go? Email is a go-to for desk workers but is ineffective for frontline workers who rely on mobile devices at work.