Seaquel
SQL Server error code

SQL Server error 5228

SQL Server raises error 5228 at severity 16, which marks a problem with the query or data that you can correct.

Table error: object ID %d, index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls), page %S_PGID, row %d. DBCC detected incomplete cleanup from an online index build operation. (The anti-matter column value is %d.)
Msg5228
NameDBCC4_ANTIMATTER_COLUMN_DETECTED
Severity16
Group5000–5999

What it means

An unfinished online index build was detected for object O_ID, index I_ID, and partition PN_ID. This is manifested by the presence of an antimatter column on the row R_ID. An antimatter column is used when reconciling records from multiple sources during an online index build. The error message also indicates the value of the antimatter column.

Source: Database Engine events and errors