Explain Hierarchical Reports?

Answer

Hierarchical display is used for displaying data that are related. Like sales order and item details. Here sales order details can be the header data whereas them items in the sales order can be the item data

The function module used for this is

REUSE_ALV_HIERSEQ_LIST_DISPLAY

Export:

• I_CALLBACK_PROGRAM
• I_CALLBACK_PF_STATUS_SET
• I_CALLBACK_USER_COMMAND
• IS_LAYOUT
• It_fieldcat
• It_events
• I_tabname_header : Name of the internal table in the program containing the output data of the highest hierarchy level.
• I_tabname_item : Name of the internal table in the program containing the output data of the lowest hierarchy level.
• Is_keyinfo : This structure contains the header and item table field names which link the two tables (shared key).

Tables

• t_outtab_header : Header table with data to be output
• t_outtab_item : Name of the internal table in the program containing the output data of the lowest hierarchy level.

All the definitions of internal tables, structures and constants are declared in a type-pool called SLIS. This internal table can be populated automatically by using REUSE_ALV_FIELDCATALOG_MERGE'.