Identifying Your Communications Partner

For a program initiating a conversation, it must provide certain information to identify its partner. This includes the partner's transaction program name and other information that describes where the partner program is located.

A program can choose to explicitly provide this information when it starts communications. However, a program can also implicitly provide this information by just specifying a symbolic destination name. This symbolic destination name maps to the partner's transaction program name and location information. For VM, this mapping is done by a CMS communications directory file.