version: 2014.1 icehouse-stable
# nova help flavor-create
...
<id> Unique ID (integer or UUID) for the new flavor. If
specifying 'auto', a UUID will be generated as id
...
"id" should be integer or UUID.
But when the "id" was set to non-integer or non-UUID, the flavor was also created successfully.
# nova flavor-create flv-testdddfasdfsfdsfdsf jljdfsfojgnngllllllll 512 1 1
+-----------------------+--------------------------+-----------+------+-----------+------+-------+-------------+-----------+
| ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public |
+-----------------------+--------------------------+-----------+------+-----------+------+-------+-------------+-----------+
| jljdfsfojgnngllllllll | flv-testdddfasdfsfdsfdsf | 512 | 1 | 0 | | 1 | 1.0 | True |
+-----------------------+--------------------------+-----------+------+-----------+------+-------+-------------+-----------+
https:/ /review. openstack. org/#/c/ 165299/