System requests do not work
Here are the solutions for when system requests do not work.
When using Operations Console, SYSREQ corresponds to Shift+ESC and is defined as the default for the Access Client Solutions 5250 Emulator.
Most keyboards have a Print Screen key, also labeled as SYSREQ and would be activated by using that key with the Ctrl key, however Windows reserves this key for the Print Screen function.
You must remap the keyboard by using the operating system, not the Access Client Solutions 5250 Emulator, in order to change it.