This step prepares you for setting the compatibility mode in the next minor step, when you choose whether to set the compatibility mode to the new level (that is, the product version to which you are upgrading) or to retain the current level (that is, the product version from which you are upgrading).

It is normally recommended to set the compatibility mode to the new level. This enables you to work with all the latest functions and features after the upgrade. However, ensure that you have done sufficient testing and are satisfied with the stability of the upgraded system.

In the following situations, you should NOT set the compatibility mode to the new level:

• Any IOA datasets (for example, the Condition file) are shared with another environment at a lower level.
• Control-M is installed and Control-M/Enterprise Manager is still on a lower level.

For such cases, you can change the compatibility mode at a later time (after the upgrade) using the MODE parameters in ICE.

Perform the following:

1. Select Minor Step 1, Pre-ACCEPT Requirements.

   Information about setting the compatibility mode is displayed.

2. If you decide to set the compatibility mode to the new level, shut down all INCONTROL address spaces at this time, before performing Step 3.2, to prevent working in mixed compatibility modes.

   To help you with this action, Step 3.2 identifies the key datasets that are in use and prompts you to stop them before you continue with setting the new compatibility mode.

3. Press PF3 (END) to return to the Minor Steps Selection panel.