We have Exchange 2010 SP2. We encountered several errors in application event log with event ID 1243:
Error encountered attempting to update a categorized view to reflect an operation on a message. Database: DB1 Folder: ??? MsgHeader ID: ***** Folder ID: ***** Categorization ID: ***** Document ID: ***** Message Operation: 0 Function: EcCategorizeMessage Error Code: 0x48a
I used exfolder and I found name of affected mailbox and name of folder, which reports error (according FolderID).
Have you ever met with this event ID 1243? Do you know what is MS-OLK-BGPooledSearchFolder or how to continue in investigation?