Apply entitlement and billing rules under SGB V/XI. This includes assessing specific cases, applying current requirements and case law, legally sound documentation, and advising business units in plain language.Apply entitlement and billing rules under SGB V/XI. This includes assessing specific cases, applying current requirements and case law, legally sound documentation, and advising business units in plain language.Apply entitlement and billing rules under SGB V/XI. This includes assessing specific cases, applying current requirements and case law, legally sound documentation, and advising business units in plain language.