1. ServiceNow Product Documentation - Incident Management: The process for self-assignment is detailed
specifying the system's behavior in different scenarios. The documentation states
"If you belong to more than one assignment group
a dialog box appears. Select the group that you want to assign the incident to and click OK."
Source: ServiceNow Product Documentation
"Assign an incident to yourself
" Washington DC release.
2. ServiceNow ITSM Implementation Courseware: Official training materials for the CIS-ITSM certification cover the core functionalities of Incident Management
including the behavior of standard UI actions like "Assign to me." These materials explain that the system prompts for a group selection when a user is a member of multiple groups to ensure the incident is correctly categorized.
Source: ServiceNow Training and Certification
ITSM Implementation — Participant Guide
Section: Incident Management Fundamentals.