Upgrading from Version 6 and earlier
For product changes from Version 6 and earlier, to Version 7 and later, refer to the appropriate documentation.
Note: When you prepare to upgrade from an unsupported release of CICS® Transaction Gateway to CICS Transaction Gateway 9.3, you should check the upgrading documentation for an interim release, such as V7.1 for any special requirements. Alternatively, you can install CICS Transaction Gateway 9.3 as a new installation.
For more information, see Documentation for older versions of CICS products.