Code one APPL definition statement for each application program that is in the VTAM® domain and include it in an application program major node.
If you use TSO/VTAM, the MVS™ logon manager, or the Tivoli® NetView® for z/OS® (NetView) alias translation facility for alias name translation, there are specific coding requirements for the APPL definition statement. See z/OS Communications Server: SNA Network Implementation Guide for specific information on these requirements.