Select this check box to specify that the CICS® Universal Client converts to uppercase any user ID or password from an ECI application or from a user prompt. This setting is disabled by default.
If the UPPERCASESECURITY entry is missing from the configuration file, the default behaviour is for UPPERCASESECURITY to be enabled.
For details of the corresponding entry in the configuration file, see UPPERCASESECURITY (SERVER section of the configuration file).