When transporting a custom leading business role in SAP S/4HANA Cloud Public Edition, SAP recommends adding all derived business roles as dependencies to the Software Collection. This ensures that the entire role hierarchy, including the leading role and its derived roles, is transported consistently to the target system, maintaining the intended authorization structure. Derived roles inherit specific attributes and restrictions from the leading role, and including them in the Software Collection prevents issues such as missing authorizations or broken dependencies in the target environment. Adding the pre-delivered business role used as a template or other leading roles from the same Line of Business is not necessary, as these are either SAP-standard roles already available in the target system or unrelated to the custom role's transport. This approach streamlines the transport process and ensures operational continuity.

Secure Network Communication (SNC) in SAP systems provides three key levels of security protection:
Authentication, Privacy, and Integrity. Authentication ensures that the communicating parties, such as users or systems, are verified as legitimate, preventing unauthorized access. Privacy protects data during transmission by encrypting it, safeguarding sensitive information from interception or eavesdropping.
Integrity ensures that data is not altered or tampered with during transmission, guaranteeing that the received data matches the sent data. These protections are critical for secure communication in SAP environments, particularly for external interfaces or remote connections. Availability, while important, is not a direct function of SNC, as it relates to system uptime rather than communication security. Authorization, which controls access rights, is managed by SAP's authorization framework, not SNC. By implementing SNC, SAP systems achieve a robust security posture for network communications, ensuring trust and data protection across distributed landscapes.