The reason you can not create becasue you do not have the FCOE licenses for F2 cards installed in the system. You can use a grace license period which is for 120 days by installing the FCOE featureset and enabling the FCOE feature.
After the 120 days, the feature will get disabled if a valid license is not installed and all the related configuration will be removed from the system.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
==================== VIC FNIC driver does not support Virtual Volumes (
second level LUN ID ) An enhancement request has been created to track
this feature - CSCux64473 UPDATE - 12-14-2016 We made some traction on
the enhancement request - The Fix is in t...