notification
US /ˌnoʊ.t̬ə.fəˈkeɪ.ʃən/
UK /ˌnoʊ.t̬ə.fəˈkeɪ.ʃən/

1.
the action of notifying someone or something
:
•
We received notification of the upcoming meeting.
•
Please provide written notification of any changes.
2.
a formal or official notice
:
•
The company sent out a notification about the new policy.
•
You will receive a notification once your order has shipped.