Dump in creating tree

Question

hi,
i have create a tree structure when i click on the nodes it is giving dump.dump is describing like this.how to rectify the dump.
What happened?
The current application program detected a situation which really
should not occur. Therefore, a termination with a short dump was
triggered on purpose by the key word MESSAGE (type X).
What can you do?
Note down which actions and inputs caused the error.
To process the problem further, contact you SAP system
administrator.
Using Transaction ST22 for ABAP Dump Analysis, you can look
at and manage termination messages, and you can also
keep them for a long time.
rgds,
Hi.

Answer 1

hi ,
see this simple code for a tree structure and function modules for tree structures...
REPORT  Ztree_TEST_PGM.
Type-pools : fibs,stree.
data : t_node type snodetext.
data : node_tab like t_node occurs 0 with header line.
clear : node_tab, node_tab[].
node_tab-type = 'T'.
node_tab-name = 'Earth'.
node_tab-tlevel = '01'.
node_tab-nlength = '5'.
node_tab-color = '4'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 3.
append node_tab.
clear node_tab.
node_tab-type = 'P'.
node_tab-name = 'Europe'.
node_tab-tlevel = '02'.
node_tab-nlength = '6'.
node_tab-color = '1'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 4.
append node_tab.
clear node_tab.
node_tab-type = 'P'.
node_tab-name = 'Germany'.
node_tab-tlevel = '03'.
node_tab-nlength = '7'.
node_tab-color = '4'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 4.
append node_tab.
clear node_tab.
node_tab-type = 'P'.
node_tab-name = 'Berlin'.
node_tab-tlevel = '04'.
node_tab-nlength = '6'.
node_tab-color = '4'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 3.
append node_tab.
clear node_tab.
node_tab-type = 'P'.
node_tab-name = 'Asia'.
node_tab-tlevel = '02'.
node_tab-nlength = '4'.
node_tab-color = '1'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 3.
append node_tab.
clear node_tab.
node_tab-type = 'P'.
node_tab-name = 'India'.
node_tab-tlevel = '03-'.
node_tab-nlength = '5'.
node_tab-color = '1'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 3.
append node_tab.
clear node_tab.
node_tab-type = 'P'.
node_tab-name = 'Bombay'.
node_tab-tlevel = '04-'.
node_tab-nlength = '6'.
node_tab-color = '1'.
node_tab-text = 'Hello'.
node_tab-tlength ='5'.
node_tab-tcolor = 3.
append node_tab.
clear node_tab.
CALL FUNCTION 'RS_TREE_CONSTRUCT'
  TABLES
    NODETAB                  = node_tab .
  DATA: type_mapping TYPE stree_ctl_type_mapping_tab.
  DATA: wa_type TYPE stree_ctl_type_mapping.
  CLEAR: type_mapping[].
    wa_type-type = 'A'.
    wa_type-icon = '@BL@'.
    APPEND wa_type TO type_mapping.
CALL FUNCTION 'RS_TREE_LIST_DISPLAY'
EXPORTING
   USE_CONTROL                     = 'L'.
*A list of other function modules that can also be used to construct tree reports:
*SEUT,                            Hierarchy framework
*RS_TREE_ADD_NODE                 Insert nodes
*RS_TREE_AUTOMATIC_REFRESH
*RS_TREE_COMPRESS                 Hide subtree(s)
*RS_TREE_CONSTRUCT                Construct new hierarchy or insert subtree
*RS_TREE_CONTROL_PREPARE
*RS_TREE_CREATE                   Create hierarchy
*RS_TREE_DELETE_NODE              Delete node with associated sub-tree
*RS_TREE_EXPAND                   Expand subtree
*RS_TREE_GET_CURRENT_LAYOUT       Get layout information for displayed hierarchy
*RS_TREE_GET_CURRENT_NODE         Get node at which cursor is positioned
*RS_TREE_GET_CURRENT_ROOT         Get current root node
*RS_TREE_GET_CURRENT_TREE         Get structure information for displayed hierarchy
*RS_TREE_GET_INPUT                Get entires from input fields
*RS_TREE_GET_MARKED_NODES         Get selected nodes
*RS_TREE_GET_MODIFICATION_LOG     Get change log for hierarchy
*RS_TREE_GET_NODE                 Get nodes for specified ID
*RS_TREE_GET_NODE_BY_NAME         Get node for specified node name
*RS_TREE_GET_PREDECESSOR          Get preceding node
*RS_TREE_GET_SEARCHSTRING         Get last search strinng
*RS_TREE_LIST                     Simulate hierarchy or subtree display
*RS_TREE_LIST_DISPLAY             Display hierarchy
*RS_TREE_LIST_DISPLAY             Display hierarchy
*RS_TREE_MODIFY_NODE
*RS_TREE_MOVE                     Reassign node with subtree
*RS_TREE_POP                      Get hierarchy from the stack and restore
*RS_TREE_PUSH                     Place hierarchy on the stack
*RS_TREE_RESET_LOCK               Deselect node
*RS_TREE_SET_CURRENT_LAYOUT       Set layout with marked cursor position
*RS_TREE_SET_CURRENT_TREE         Set other hierarchy
*RS_TREE_SET_LOCK                 Select node
*RS_TREE_SET_NODE                 Change Nodes
*RS_TREE_SET_SCROLL_POS           Position node at the beginning of the page
*RS_TREE_SLEEP
*RS_TREE_SORT_CHILDREN
reward points if useful,
venkat.