Hi..
All data related to controlling document is inserted into table COSP, COSS and COSP.
To get data from these tables, you get object number related to wbs element from table prps and get data releated to wbs from COSP, COSS and COSP using get object number related to wbs element .
Refert to below sql statement.
SELECT coep~objnr prps~posid
INTO (coep-objnr, prps-posid)
FROM coep AS coep
JOIN prps AS prps
ON coep~objnr = prps~objnr.
* WHERE ...
ENDSELECT.