You should review the Preventive Service Planning (PSP) bucket information for a product when planning for an upgrade or applying maintenance. Often, you might not know the UPGRADE or SUBSET name of the PSPBUCKET. This document gives the links directly to the PSP buckets for supported releases of CICS® Transaction Server, CICSPlex® SM, and CICS Tools. You can also find any PSP bucket on the Web for any product.