Selectable Units for New Natural Features

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# Selectable Units for New Natural Features

Natural selectable units provide the option to use selective new or changed Natural features as required instead of completely upgrading Natural.

Selectable units are implemented as `NATSUPGM` module which is loaded on request during Natural session start. However, if you want to use selectable units under CICS TS, you need to perform the optional installation step described in Selectable Units Module NATSUPGM in Installing Natural CICS Interface on z/OS in the Installation documentation.

To select and activate or deactivate selectable units

- Set the `SELUNIT` profile parameter as described in the Parameter Reference documentation.

To list all available selectable units and their operational status

- Issue the `SHOWSU` system command described in the System Commands documentation.

  The SHOWSU Selectable Units screen appears with a list of all selectable units available in your environment and indicates their current status (available and/or active) as specified with the `SELUNIT` profile parameter.

To list active selectable units only

1. If you only want to list all selectable units that are currently active in your environment, issue the `SYSPROD` system command (see the System Commands documentation).

2. On the Installed Products screen, enter the line command `SU` in the Product Name column next to `Natural`.

   If a selectable unit is active in your environment, a window opens indicating the number of the unit and the Natural feature supported by this unit. Otherwise, the window shows the message `No unit activated`.

   If you enter the command `SU` for a Product Name that does not support Natural selectable units, a corresponding message appears.