Current release to previous release support

This support enables objects (such as programs and files) that are created and saved on the current release to be restored and used on a previous release.

Object compatibility is provided for many languages, and most object types are supported on both release levels as long as the objects use only functions from a previous release.

You can enable current release-to-previous release support by using the target release (TGTRLS) parameter on create and save commands.

Table 1 illustrates the TGTRLS parameter and values available for the current and previous releases. The values in the table are used throughout this chapter. Refer to this table to determine the valid values for the release currently on your system.

The TGTRLS values must use the form VvRrMm.

This support is extremely useful to the following situations:

• A network enterprise with a central site development system on the current release and with remote sites still on the previous release.
• An application development business with a single system on the current release that supports customers who might still be on the previous release.

Current release-to-previous release support provides great savings and productivity improvements to application developers. By using this support, most network enterprises and application development businesses no longer need to maintain two development systems. (For example, two development systems could contain a previous-release system that contains previous-release objects, or a current-release system that contains current-release objects.) In most cases, this support enables previous- and current-release objects to exist on one development system.