Defining IMS Transactions

Usually, a transaction definition must exist for any program you want to run. There are two ways of creating transaction definitions:

You export transaction definitions to a transaction file, which contains the transaction and printer definitions needed to subsequently import into Enterprise Server. It is a flat text file, so you can edit it to remove any definitions that are not needed for the application to run under Enterprise Server. You can create a transaction file in one of two ways: Either export from a stage 1 file from the mainframe, or export the transactions from a different enterprise server instance.
The import utility reads the transaction file created by the export utility, and adds the transaction definitions to the IMSGEN2.DAT file in the current directory. If IMSGEN2.DAT doesn't exist, it is created.