ACT_ELEM_UPD_ORGDATA_ST 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 "BAPI Update structure for Activity" 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_ACT_ELEM_UPD_ORGDATA_ST TYPE ACT_ELEM_UPD_ORGDATA_ST.
The ACT_ELEM_UPD_ORGDATA_ST table consists of various fields, each holding specific information or linking keys about BAPI Update structure for Activity data available in SAP. These include ELEMENT (Activity element number (work/external/general costs)), PLANT (Updated information in related user data field), ACTTYPE (Updated information in related user data field), PURCH_ORG (Updated information in related user data field)... 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. .