PRPS_WU 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 "Structure for Where-Used List: Cost Centers in Projects" 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_PRPS_WU TYPE PRPS_WU.
The PRPS_WU table consists of various fields, each holding specific information or linking keys about Structure for Where-Used List: Cost Centers in Projects data available in SAP. These include MANDT (Client), PSPNR (WBS Element), POSID (Work Breakdown Structure Element (WBS Element)), POST1 (PS: Short description (1st text line))... 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. .