Everything is Possible to Do—With or Without Script in ServiceNow

[AbhishekS603265]

While learning ServiceNow, we often come across rules, configurations, or out-of-the-box behaviors that seem fixed or non-customizable. But the reality is: almost everything in ServiceNow is possible—either through configuration or scripting.
Emergency Changes don’t need approvals — that's the default.
But yes, you can add approval steps to emergency changes. You can customize workflows or use Flow Designer to introduce extra approvals even for emergency change models.
Deep ServiceNow Facts That Seem Impossible But Are Possible

1. Fact 1: Add Approval to Emergency Changes

   • Even though the standard model skips it, you can inject approvals via:

     • Flow Designer

     • Change Workflow modification

     • Condition-based Approval Rules

2. Fact 2: UI Policy Can Act Like Client Script

   • You can hide, disable, or make fields mandatory using UI Policy — no need for scripts in most simple cases.

   • And yes, UI Policy applies on List View too (checkbox: "Applies on List View").

3. Fact 3: Data Policy Works on External Data

   • Data Policy doesn’t just work on forms; it enforces rules on:

     • Inbound REST / SOAP

     • GlideRecord scripts

     • Import Sets

   • Many believe only UI Policy enforces rules, but Data Policies are more powerful when it comes to enforcing backend integrity.

4. Fact 4: Portal Can Be Built with No Code

   • The entire Service Portal can be built using:

     • Page Editor

     • Widget Instances

     • Themes & Menus

   • Custom widgets are optional; a lot can be achieved with out-of-the-box widgets and configuration only.

5. Fact 5: ACLs Can Be Replaced with Script-based Checks

   • ACLs control access by default, but you can also:

     • Use GlideRecord checks

     • Use g_form.setVisible / setReadOnly for runtime restrictions

     • Implement custom Script Includes to return role-based data

6. Fact 6: Scripted Filters in Reference Fields

   • You can show filtered data in dropdowns based on user role, form value, or even time of day using:

     • Reference qualifier

     • Scripted functions

     • Dynamic filter options

7. Fact 7: You Can Clone ServiceNow Portals

   • Even ESC (Employee Center) which looks like a packaged product, can be:

     • Cloned fully

     • Modified independently

     • Skinned with your own branding

[SD_Chandan]

Hi @AbhishekS603265 ,
Thanks for info 

[Yogeshv40513812]

thanks