ERRTB 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 "Delivers Error List from Project Time Scheduling" 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_ERRTB TYPE ERRTB.
The ERRTB table consists of various fields, each holding specific information or linking keys about Delivers Error List from Project Time Scheduling data available in SAP. These include STUFE (Level in Project Hierarchy), START (Start date for an object (WBS element, operation)), ENDE (Finish date for an object (WBS element, activity ...)), EINHT (Normal duration/unit)... 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. .