Different Release Levels used by Multiple Concurrent IUI Sessions
Multiple concurrent IUI sessions cannot use different IBM® Connect:Direct® release levels.
The first IUI session will load reentrant load modules into storage, and because they are reentrant, subsequent concurrent IUI sessions started in other logical screens will use them instead of loading a new copy from the ISPLLIB DD, the LIBDEF ISPLLIB, or the LINKLIST. Thus only one IBM Connect:Direct release can be used at a time, regardless of the number of concurrent IUI sessions.