BAPI_TE_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 "Help Structure for Customer Enhancement Fields in Table PROJ" 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_BAPI_TE_PROJ TYPE BAPI_TE_PROJ.
The BAPI_TE_PROJ table consists of various fields, each holding specific information or linking keys about Help Structure for Customer Enhancement Fields in Table PROJ data available in SAP. These include PROJECT_DEFINITION (Project Definition)... 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. .