When raw SQL is used, IBM® strongly recommends using <TempTable> tokens. Campaign produces a warning when <TempTable> tokens are not used. However, the <TempTable> use warning is not displayed if you initially disallowed temp tables but then change the data source to subsequently enable their use. IBM® recommends that if you do turn on the use of temporary tables, you manually review all instances where raw SQL is used, to determine if the <TempTable> token should be added.