With InterForm400 there are a few things, that really should be avoided. One of them is to add the APF3812 library to the system library list. Do NOT do that – it is also just a bad idea to place any user objects as programs, output queues in the APF3812 library. The worst thing is to add the APF3812 library to the library list and then just refer to call any InterForm400 without specifying the library. This makes it possible to do an upgrade as a lot of jobs has a lock on the APF3812 library. In order to get around that, you need to do this:

1. First change all references to InterForm400 to also include the library of the command.
2. Remove the APF3812 library from the system library list.
3. Then restart all jobs having a lock on the APF3812 library. The easiest thing is to do an IPL, but make sure to verify that all is running OK after that.