A CSM (Communications Support Module), in the database server or in the client, detected an error.
This error code is a general CSM error code. It can be used by individual CSMs to reflect different error conditions. The text provides clues about the possible cause of the error.
If the confidentiality option is enabled for a particular CSM, you might see the following example of this error code: "CSM error: CSM: received message of unexpected type." This implies that the CSM on the user's side (either database server side or client application side) cannot interpret the messages it receives. Make sure that the confidentiality option is set for both the database server and the client application.
Check your sqlhosts file and CSS configuration file. Check the error message on the other side (either database server side or client application side) for more clues about the possible cause of the error.
Also make sure that the CSM you are using is supported by the database server or the client SDK. If the problem persists, contact IBM Informix Technical Support or the CSM vendor. Have the following information available: CSS configuration files and sqlhosts information for both the client and the database server.