This illustration shows the Application toolbar.

On the left of the toolbar is the Main Menu button, to the right of that are the breadcrumbs to the Travel Request Application. 

To the right of the breadcrumbs is the viewing mode (Editing), and to the right of that are the following buttons, displayed left to right, Save, Publish, and Discard. 

On the far right are the Snapshots, Test Application, and Validate Application buttons.

The following item is bordered in red, to call attention to it:
Validate Application button