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SQL Server error code

SQL Server error 2522

SQL Server raises error 2522 at severity 16, which marks a problem with the query or data that you can correct.

Unable to process index %.*ls of table %.*ls because filegroup %.*ls is invalid.
Msg2522
NameDBCC_INDEX_FILEGROUP_IS_INVALID
Severity16
Group2000–2999

What it means

This informational message indicates that the index cannot be checked because one of the filegroup IDs that is stored in the metadata of the index does not exist. The filegroup ID that is not valid might pertain to the data itself, or to the large object (LOB) data, or to the row-overflow data.

Source: Database Engine events and errors