Hi,
check below threads
http://scn.sap.com/docs/DOC-35750
http://wiki.sdn.sap.com/wiki/display/BI/Step+by+Step+Loading+Data+to+Inventory+Cube
http://scn.sap.com/post!clean.jspa
in case you want to do full repair you can selectively load the set up table and do full repair data load to correct few documents..
Doing full reload is more work..
Thanks and regards
Kiran