Source:  AIOCOMX

Explanation:  The LOAD AIOCOMX command line specified an invalid value for the RXT= parameter, which sets the receiver FIFO threshold value. For ports that use or emulate a 16550 UART, you can set the RXT= parameter to 1, 4, 8, or 14. (The default RXT= value for 16550 devices is 4). For all other types of ports, the RXT= parameter must be set to the default value, 1.

If AIOCOMX is already loaded, the previously loaded port configurations remain active; the current loadcommand does not create a new port configuration.

Action:  Reenter the LOAD AIOCOMX port with an RXT= parameter that is supported by your port hardware.