A custom member based on a structural dimension (e.g. Organizational Unit), set as publicly shared, still does not appear in the Special Functions section of Report By or Limit By in the Filters panel.
SAP SuccessFactors Workforce Analytics
If a Custom Member allows access to any categories in the dimension which are restricted by a user or role's Tree Security, it will not be selectable as a filter as it will not display its full range of categories, which might lead to confusion. This is true even if the purpose of the custom member is to exclude a single category; if Tree Security restricts any of the others, it will register as invalid and not appear.
Custom members restricted for this reason are still available for use in Query Workspace. If they are required as filters, however, Tree Security must be relaxed so that all included categories are available for a given user or role.
KBA , LOD-SF-WFA , Workforce Analytics & Planning , Problem