An IUCV connection request from another z/VM guest virtual machine has been
refused. The request was from a z/VM guest virtual machine that is not
listed by the "hvc_iucv_allow=" kernel parameter.
User response
Check the "hvc_iucv_allow=" kernel parameter setting.
Consider adding the z/VM user ID to the "hvc_iucv_allow=" list in the kernel
parameter line and reboot Linux.