How to trigger playbook automation to check mandatory fields on click of playbook action button

[Harsh_Deep]

Hi Community,

I need to create a custom playbook activity in workspace ServiceNow that includes two buttons: "Validate" and "Reject".

• When clicking "Validate", the script should check whether specific fields are filled.

  • If the required fields are populated, the process should proceed to the next activity.

  • If any required fields are empty, an error message should be displayed, preventing progression.

• The "Reject" button should allow users to reject the playbook lifecycle without validation.

Any guidance or examples would be appreciated!

Thanks in advance! 🚀