alerts composer return null

Summary:

Hi, I'm using some tags in the alert composer but the message returns Null, how do I know which tag to use?
need tags to return department, assignment number, manager

Content (please ensure you mask any confidential information):

Tags being used
Informamos que ${CompletedByDisplayName} concluiu a tarefaghjh ${TaskName} para a jornada ${JourneyDisplayName} de ${JourneyAssigneeDisplayName}.
${BusinessUnitId} ${Departmentid}${Managerid}${JourneyAssignmeniNumber}

Version (include the version you are using, if applicable):

24A (11.13.24.01.0)

Code Snippet (add any code snippets that support your topic, if applicable):