@Fentiger79 from the Subject I would say the PURCHASE_ORDER_RELEASED event is active in your environment. You would need to check the action and provide a valid email address in the To field of the Event Action.

If you don’t need these emails then you could deactivate the event.

This is the event Action for the problem. I see the User email address on the right hand side. but i have no idea of how to get to this.

When i try to look at the Event i get this 

@Fentiger79  ouch, I wasn;t expecting this. I would have thought you have a simple Send Email action type. Now I see it’s executing some custom PL/SQL function. You would need to opne the WHT_EXT_SUPP_BLK_UTIL_API pacakge body and check what’s the logic to fetch the email address before creating the application message.

I’m afraid it’s nothing more we can do to help since it’s an inhouse written mod. And anyways to fix it you might need to change PL/SQL logic.

100% concur with @Marcel.Ausan, this is custom and so that PLSQL command probably ends up calling command_sys.mail with a null parameter in the to action based on your defined logic.

If you can share the contents of that custom method we can possibly help you out too.

We’d need the body code, not just the header :)