A VARY command was issued for an OSA (open systems adapter) device. The unit address for this device was not correct for the OSA device type. Instead, an FE unit address was found.
OSA devices are used to communicate from the host to the LAN (local area network). They require the use of unit addresses in the range of 00 through FD. Only open systems adapter diagnostic (OSAD) devices can have a unit address of FE.
The VARY command fails. If VARY dddd,ONLINE was issued, the devices remains offline. If VARY PATH(dddd,cc),ONLINE was issued, the device path remains offline.
Make sure that the correct I/O configuration definition is in use by the operating system and channel subsystem. The DISPLAY IOS,CONFIG command displays the currently active IODF (I/O definition file) and currently active I/O configuration for the channel subsystem. The MVS™ ACTIVATE command can be used to dynamically switch to the correct I/O configuration definition, then the VARY command should be retried.
Correct the configuration error and retry the VARY command. Configuration errors can be corrected dynamically by updating the I/O configuration definition with the HCD (Hardware Configuration Definition) and issuing the MVS ACTIVATE command.
Input/output supervisor (IOS)
IOSVDSEO