When creating a Subscriber, which of the following details cannot be added?

When creating a Subscriber, the ability to add certain details varies depending on the requirements and capabilities of the system. In this case, the detail that cannot be added is an Alternative Mobile Number.

This limitation is likely due to the design principle of maintaining simplicity and keeping user information streamlined. Systems often prioritize essential contact details, such as a primary mobile number, email address, and username, which are critical for identification and communication purposes. By restricting the addition of alternative mobile numbers, the system minimizes complexity and potential clutter in user profiles, ensuring that the focus remains on necessary and unique contact information.

In contrast, the options like Mobile Number, Email Address, and Username are standard requirements for creating a Subscriber. These details serve important functions: the mobile number aids in communication verification and access, the email address is crucial for sending notifications or subscription confirmations, and the username is fundamental for account identification and user authentication. Overall, the exclusion of alternative mobile numbers enriches the user experience while simplifying data management within the platform.