Admin process file name admin4.nsf invalid id table

hi dear all

i have a error massage in domino consol that “admin process file name admin4.nsf invalid id table”

can anyone tell me that why it`s come.

Subject: just run l fixup -F -V -L admin4 from server console

it’s a system table, thet contain all noteID in database, fixup can help

Subject: in some case it needs to purge all view indexes

and unid table tool compact -d -c