Inspite of "Listener protocol HTTPS and pool protocol HTTP are not compatible" pool entry is getting added to neutron db

I created lbaas-listener using HTTPS protocol and lbaas-pool using HTTP.
I got exception "Listener protocol HTTPS and pool protocol HTTP are not compatible" which is acceptable.
But after this when I check neutron lbaas-pool-list , it shows pool being added.
So exception came for incompatibility then why we are adding this pool into neutron db.

Please check this link for commands executed:
http://paste.openstack.org/show/624603/

Steps to reproduce:-
1) Create LB
2) Create listener of type HTTPS.
3) Create pool of protocol type HTTP.
4) Exception would get appears but if we check neutron lbaas-pool-list pool entry would be visible.

Can we stop adding pool into neutron db if we are getting exception while adding pool.