PRTEF 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 "Internal Transfer Structure for Schedule Errors" 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_PRTEF TYPE PRTEF.
The PRTEF table consists of various fields, each holding specific information or linking keys about Internal Transfer Structure for Schedule Errors data available in SAP. These include PSTRT (WBS element: Basic start date), ESTRT (Forecasted start date of the WBS element), ISTRT (Actual start date for the WBS element), PENDE (WBS element: Basic finish date)... 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. .