Writing a logon pre-display exit (IKJEFLN1)

You can use the logon pre-display exit, IKJEFLN1, to further customize the logon process. This exit is invoked if:
  • Logon language load modules are present in the LPA
  • Exit IKJEFLD/IKJEFLD1 does not set the Don't Prompt control bit

The logon processor can invoke this exit several times during logon processing. If a re-prompt occurs for any data that is entered by the user, the logon processor invokes this exit.

You can write a pre-display exit to perform the following:
  • Supply any data for IBM® or installation-defined input fields
  • Indicate that the logon processor should refresh fields in the 3270 outbound stream with data specified in the parameter entries defined for each field