This error can also occur if the CSM option is enabled on the database server side but not on the client application side, or vice versa. If you want to use a CSM, make sure that the CSM option is set in the sqlhosts file for both the database server and client application.
This error can also occur if the confidentiality option of the CSM is enabled on the database server side but not on the client application side, or vice versa. If you want to use the confidentiality option of the CSM, make sure that the confidentiality option is set for both the database server and client application. Check your sqlhosts file and CSS configuration file.
If the error recurs, note all circumstances and contact IBM Informix Technical Support.