EAM_S_HIERARCHY_READ_PARAM is a standard SAP Structure so does not store data like a database table does. It can be used to define the fields of other actual tables or to process "Hierarchy read param structure" Information within sap ABAP programs. This is done by declaring abap internal tables, work areas or database tables based on this Structure. These can then be used to store and process the required data appropriately. i.e. DATA: wa_EAM_S_HIERARCHY_READ_PARAM TYPE EAM_S_HIERARCHY_READ_PARAM.
The EAM_S_HIERARCHY_READ_PARAM table consists of various fields, each holding specific information or linking keys about Hierarchy read param structure data available in SAP. These include VALID_FROM (Valid-From Date), LEVEL_UP (Natural Number), LEVEL_DOWN (Natural Number), FL_HIER (Structure explosion with functional location hierarchy)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .