"No flavor with a name or ID of '' exists" reported when call "nova flavor-show {id}"

Create flavor by the following method:
flavors.create(name, memory, vcpus, root_gb,
                                       ephemeral_gb=ephemeral_gb,
                                       flavorid=flavorid, swap=swap,
                                       rxtx_factor=rxtx_factor,
                                       is_public=is_public)

Created succeeded:
# nova flavor-list
+------------------------------------------+---------------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+------------------------------------------+---------------+-----------+------+-----------+------+-------+-------------+-----------+
| 1 | m1.tiny | 512 | 1 | 0 | | 1 | 1.0 | True |
| 2 | m1.small | 2048 | 20 | 0 | | 1 | 1.0 | True |
| 3 | m1.medium | 4096 | 40 | 0 | | 2 | 1.0 | True |
| 4 | m1.large | 8192 | 80 | 0 | | 4 | 1.0 | True |
| 5 | m1.xlarge | 16384 | 160 | 0 | | 8 | 1.0 | True |
| TT-19e3e819-e68a-4ddf-ac2b-2f8636356603 | TT-Testnew2 | 1024 | 20 | 0 | | 1 | 1.0 | True |
+------------------------------------------+---------------+-----------+------+-----------+------+-------+-------------+-----------+

But failed to show this:
#nova flavor-show TT-19e3e819-e68a-4ddf-ac2b-2f8636356603
ERROR (CommandError): No flavor with a name or ID of 'pvc-19e3e819-e68a-4ddf-ac2b-2f8636356603' exists.

This error also happend when boot vm, it shows cannot find the flavor, boot failed:
# nova boot --flavor TT-Testnew --image RHEL6.5 --nic net-id=3ccfc448-ee59-4b36-94c1-57b76fa84b26,v4-fixed-ip=192.168.2.201 sles-april21-jerry2
ERROR (CommandError): No flavor with a name or ID of 'tt-e835a885-e61c-48d7-af23-d4e5dbf04710' exists.

I think this is a critical issue, please help, thanks.

--------------------
1. version:
[root@controller ~]# rpm -aq | grep nova
openstack-nova-conductor-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-network-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-cells-2015.1-201504161438.ibm.el7.111.noarch
python-novaclient-2.23.0-1.ibm.el7.noarch
openstack-nova-scheduler-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-novncproxy-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-objectstore-2015.1-201504161438.ibm.el7.111.noarch
python-nova-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-api-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-console-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-compute-prereqs-2013.1-201503192011.ibm.2.ppc64
openstack-nova-compute-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-common-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-cert-2015.1-201504161438.ibm.el7.111.noarch
openstack-nova-2015.1-201504161438.ibm.el7.111.noarch

2. logs:
only this in nova-api.log
2015-04-22 04:24:03.051 28320 INFO nova.api.openstack.wsgi [req-09ce810d-fb83-4102-b137-42ea9d67c4dc 1cabd0c96f2c48599ca4220b9b9d3f8f 2a0dc745a17f4b3b9c3b99b3df95084e - - -] HTTP exception thrown: The resource could not be found.

3. 1) Create a flavor by the code above, then type the cmd as above.