You can use the Discard Resources section, if available, to discard installed resources from the running system. To discard resources, select the check box next to the resources that you want to discard in the Resources section and press the Discard from CICS button. Because discarding resources makes the resources unavailable to other users, you may want to insure that Confirm the discarding of each resource check box is selected so that you will be alerted to each impending action when you press the Discard button.
If a failure occurs when you are discarding a resource, in some cases you may need to look at output from the CICS® region logs to determine the exact cause of the failure.