def METHOD_NAME(request):
    """CSV import via button, file is on server file system"""
    # get config model
    model = SystemImporterFileCsvConfigModel.objects.get(
        system_importer_file_csv_config_name='SystemImporterFileCsvConfig'
    )
    """ check file system """
    # check file system
    stop_system_importer_file_csv = check_content_file_system(model, request)
    # leave system_importer_file_csv if config caused errors
    if stop_system_importer_file_csv:
        # return to 'system_list'
        return redirect(reverse('system_list'))
    """ check config attributes """
    # call check function
    stop_system_importer_file_csv = check_config_attributes(model, request)
    # leave system_importer_file_csv if config caused errors
    if stop_system_importer_file_csv:
        # return to 'system_list'
        return redirect(reverse('system_list'))
    """ main function """
    # call CSV importer
    system_handler(request)
    # return to 'system_list'
    return redirect(reverse('system_list'))