data : STRUCTURE_ID like TTREE-ID value
'4129EB36E4C2005C0000000096962967'.

CALL FUNCTION 'STREE_EXTERNAL_DISPLAY'
  EXPORTING
    STRUCTURE_ID                = STRUCTURE_ID

*   LANGUAGE                    = SY-LANGU
*   DISPLAY_STRUCTURE           = 'X'
*   NO_COMMIT_WORK              = 'X'
*   USE_REMOTE_CONNECTION       = ' '
*   RFC_DESTINATION             = 'NONE'
*   POSITION_ON_NODE            = ' '
*   POSITION_ON_NODES           =
*   ID_FOR_USE_AS_FILTER        = ' '
* IMPORTING
*   MESSAGE                     =
*   TOGGLE                      =
* TABLES
*   USER_PARAMETERS             =
*   POSITION_HIERARCHY          =
.