The JCL input parameters and TIBCO messaging applications are case sensitive.
JCL Input Parameters
The JCL used to execute TIBCO messaging applications is case sensitive. When editing the JCL, turn Cap Lock off.
TIBCO Messaging Applications
TIBCO messaging applications are also case sensitive. Any application program that uses TIBCO EMS Client for z/OS (MVS) API calls must use the correct case when specifying the API calls.