RCJ_EVQUANT 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 "Progress Analysis: Quantities" 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_RCJ_EVQUANT TYPE RCJ_EVQUANT.
The RCJ_EVQUANT table consists of various fields, each holding specific information or linking keys about Progress Analysis: Quantities data available in SAP. These include EV_PLAN_QUAN_ORG1_UNIT (BCWS, Unit of Measure), EV_ACT_QUAN_ORG1 (Budgeted cost of work performed, quantity), EV_ACT_QUAN_ORG1_UNIT (BCWP, Unit of Measure), EV_ACT_QUAN_CORR1 (Budgeted cost of work performed, adjusted quantity)... 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. .