In addition to user-defined transactions, the APPC in your product supports a number of system transactions that assist in NCL communication, especially in the area of client/server processing. These transactions are as follows:
This is used to initiate a new NCL process in either the local or a remote system
This is used to call a procedure in either the local or a remote system in the manner of a remote procedure call
Establishes a standard APPC conversation by attaching an NCL procedure by name, rather than indirectly through a transaction identifier
Establishes a conversation connection to an existing NCL process in either the local or a remote system.
These system transactions are automatically defined in the Transaction Control Table during system initialization, but can be modified by the installation if necessary using the REPTRANS, DELTRANS and DEFTRANS commands.