To answer this question, we need to understand the authorization levels for maintaining R/3 user ID parameters.
Option A) Only the R/3 system administrator - This option is incorrect because the R/3 system administrator is not the only authorized user to maintain R/3 user ID parameters. There is another user who is also authorized.
Option B) Only the R/3 system administrator and the user - This option is correct because both the R/3 system administrator and the user themselves are authorized to maintain R/3 user ID parameters. The system administrator has administrative privileges to manage user accounts, while the user can update their own ID parameters as per their requirements.
Option C) Only the user himself - This option is incorrect because the user is not the only authorized user to maintain R/3 user ID parameters. The system administrator also has the authority to manage user accounts.
Option D) Only user SAP* - This option is incorrect because user SAP* is a predefined system user and does not have the authority to maintain R/3 user ID parameters. The system administrator and the user themselves have the necessary authorization for this task.
Therefore, the correct answer is option B) Only the R/3 system administrator and the user. This option is correct because both the system administrator and the user have the authority to maintain R/3 user ID parameters.