BAPI2001_PROJ 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 "PS@BBP: Project Definition (Master Data)" 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_BAPI2001_PROJ TYPE BAPI2001_PROJ.
The BAPI2001_PROJ table consists of various fields, each holding specific information or linking keys about PS@BBP: Project Definition (Master Data) data available in SAP. These include PROJ_KEY (PS@BBP: Internal Number for Project Definition), DESCRIPTN (PS: Short description (first text line)), OBJECT_NO (Object number)... 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. .