Seaquel
SQL Server error code

SQL Server error 1721

SQL Server raises error 1721 at severity 16, which marks a problem with the query or data that you can correct.

Altering table '%.*ls' failed because the row size using vardecimal storage format exceeds the maximum allowed table row size of %d bytes.
Msg1721
Severity16
Group1000–1999

Source: Database Engine events and errors