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SQL Server error code

SQL Server error 7908

SQL Server raises error 7908 at severity 16, which marks a problem with the query or data that you can correct.

Table error: The file "%.*ls" in the rowset directory ID %.*ls is not a valid FILESTREAM file in container ID %d.
Msg7908
NameDBCC2_FS_INVALID_COLUMN_LEVEL_FILE
Severity16
Group7000–7999

What it means

The name of a FILESTREAM file in a column directory is a ROWGUID. If a file name in a column directory cannot be converted to a ROWGUID, the file is not a valid file.

Source: Database Engine events and errors