E2CSLAC 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 "Core master activity type master" 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_E2CSLAC TYPE E2CSLAC.
The E2CSLAC table consists of various fields, each holding specific information or linking keys about Core master activity type master data available in SAP. These include KOKRS (Controlling Area), LSTAR (Activity Type), DATBI (Character field, 8 characters long), DATAB (Character field, 8 characters long)... 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. .