Whilst using the system you will recieve alerts when a job you have created or are doing has changed or needs to be reviewed. The alerts will pop up as an orange bar at the bottom of the screen as seen below. This alert will remain on the screen regardless of what page you are viewing until it has been addressed.
Alerts can also be viewed by going to 'logistics' - 'view alerts' and at the top of the page of the relevant job as seen below.

Regardless of which route you open the alert it is important to read the information being highlighted and either reply by selecting 'add note/clear alert' or if no further action is needed select 'acknowledge/clear alert'.