You can only map a set of two or more DCSSs to a single DCSS device if
either all DCSSs in the set have the same type or if the set contains DCSSs
of the two types EW and EN but no other type. The DCSS device cannot be
created because at least two of the specified DCSSs are not compatible.
User response
Check the definitions of the DCSSs on the z/VM hypervisor to verify that
their types are compatible.