To register APPC/MVS LUs as members of a generic resource group, your installation must:

1. Install VTAM® Version 4 Release 4 or later, and meet the requirements documented for generic resources in z/OS Communications Server: SNA Network Implementation Guide.

   If an earlier level of VTAM is installed, and a generic resource name is specified on the LUADD statement for an LU, APPC/MVS activates the LU, but without using the generic resource name. In this case, Allocate requests specifying the generic resource name will fail.

2. Select an appropriate generic resource name. Refer to The Simplest Approach for guidelines for selecting names.
3. Through the appropriate commands for the installation's security product, protect LUs in a generic resource group by:
   • Defining LU-to-LU access authority (APPCLU profiles)
   • Defining which user IDs are authorized to allocate conversations with those LUs (APPL profiles)
   • Prohibiting non-APF-authorized programs from registering with a generic resource name (VTAMAPPL profiles).

   If the LUs in the same generic resource group reside on different MVS systems, some of these commands must be entered on each system on which the LU members reside. You cannot specify generic resource names on any other security profiles. Refer to the appropriate sections of Setting up Network Security for details about using RACF® commands to protect LUs in a generic resource group.

4. Through an APPCPMxx parmlib member, use an LUDEL statement to delete each existing, active LU that is to register with a generic resource name.
5. Also through an APPCPMxx member, use an LUADD statement with the GRNAME parameter to define each LU and associate it with a generic resource name.