Update error code documentation (#15790)

content/en/docs/20.0/reference/errors/query-serving.md

@@ -45,6 +45,7 @@ These error messages are internal to Vitess. If you are getting other errors fro
 | VT03030 | The number of columns you want to insert do not match the number of columns of your SELECT query. | lookup column count does not match value count with the row (columns, count): (%v, %d) | 1136 | 21S01 |
 | VT03031 | EXPLAIN has to be sent down as a single query to the underlying MySQL, and this is not possible if it uses tables from multiple keyspaces | EXPLAIN is only supported for single keyspace | 0 |  |
 | VT03032 | You cannot update a table that is not a real MySQL table. | the target table %s of the UPDATE is not updatable | 1288 | HY000 |
+| VT03033 | The table column list and derived column list have different column counts. | In definition of view, derived table or common table expression, SELECT list and column names list have different column counts | 1353 | HY000 |
 | VT05001 | The given database does not exist; Vitess cannot drop it. | cannot drop database '%s'; database does not exists | 1008 | HY000 |
 | VT05002 | The given database does not exist; Vitess cannot alter it. | cannot alter database '%s'; unknown database | 1049 | 42000 |
 | VT05003 | The given database does not exist in the VSchema. | unknown database '%s' in vschema | 1049 | 42000 |