To set up SAP Service Cloud Version 2, the following steps are mandatory:

Create Organizational Structure (D): Defining the organizational hierarchy (e.g., departments, teams) is foundational for structuring service processes, agent assignments, and access control.

Create Business Role (B): Business roles determine user permissions and access to specific functionalities. This ensures compliance with security policies and role-based access control (RBAC).

Why other options are incorrect:

A. Assign employee to organizational units: While necessary for user management, this step occurs after creating the organizational structure (D) and business roles (B).

C. Log in with initial user: Though required to access the system, it is a prerequisite for configuration, not a "setup step" itself.

References:

SAP Service Cloud Administration Guide: "Organizational Management" and "Business Role Configuration".

SAP Learning Hub: "Initial Setup Tasks for SAP Service Cloud."