Overview

Service portal forms are usually using blue buttons to save, submit or update the form.  One example of this is the save button showing in the instance form which can be accessed from the service portal designer. This button is referring to the primary UI action of the form's table. 
 

What is a primary UI action?

The primary UI action of a form is the UI action having:

• A matching table name or a matching parent table name or global.
• An action name of "sysverb_insert" or "sysverb_update".
• Form button is set to true. 
• The lowest order (Defined in the order field belonging to the sys_ui_action table).