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SQL Server error code

SQL Server error 6522

SQL Server raises error 6522 at severity 16, which marks a problem with the query or data that you can correct.

A .NET Framework error occurred during execution of user-defined routine or aggregate "%.*ls": %ls.
Msg6522
NameSQLCLR_UDF_EXEC_FAILED
Severity16
Group6000–6999

What it means

Consider the following scenarios.

Source: Database Engine events and errors