ServiceNow Scripting Full Course: How to Call a Script Include in a Custom Action in Flow Designer

In this video, we walk through how to build a custom Flow Designer action in ServiceNow that connects directly to a reusable Script Include.

You'll learn how to:

✅ Create a custom Flow action with inputs and outputs
✅ Call a Script Include using clean, object-oriented structure
✅ Reuse service classes like EmployeeServiceWrapper for business logic
✅ Validate data using a centralized EmployeeEntity
✅ Generate unique identifiers using GlideGuid()
✅ Log execution flow with a shared BaseLogger
✅ Apply principles of secure, maintainable, and scalable design

This approach ensures that your Flow Designer logic is cleanly separated from your business logic, improving reusability and reducing duplication — while maintaining data integrity and secure validation.

🎯 If you're building ServiceNow automations with Flow Designer, this is how you do it right.

To enhance your expertise, consider enrolling in live instructor-led courses and laboratories. These courses offer practical experience and access to labs, preparing you for real-world projects and positioning you as an expert in development or administration.