ServiceNow Certified System Administration Practice

The ability for admins to set mandatory and read-only states for a field is facilitated by UI Actions. UI Actions allow you to define custom buttons, links, and context menu options that can trigger specific scripts or actions within the ServiceNow platform. When setting up a UI Action, you can include conditions that determine when a field should be mandatory or read-only based on the context of the record.

For example, while a UI Action can be configured to set a specific field to mandatory when a button is clicked, it is important to note that UI Actions operate only in response to user interaction at the user interface level. This allows for a flexible way to ensure that the necessary data is collected from users when interacting with forms or records.

Other methods, such as Data Policies, Business Rules, and Client Scripts, provide functionalities that can manipulate data or enforce requirements but in different contexts or scopes. Data Policies are focused on ensuring data quality, Business Rules act server-side to enforce conditions on record creation or updates, and Client Scripts allow you to perform additional client-side scripting but do not inherently provide direct options for setting a field's mandatory or read-only states on their own without the context of a button click or action trigger.