Deploy error or "missing DISK mandatory" on OpenNebula?

Question

Virtualization

Step 1 .
Load ISO from OS

IMAGE 18 INFORMATION                                                            
ID             : 18                  
NAME           : CentOS 6.6          
USER           : oneadmin            
GROUP          : oneadmin            
DATASTORE      : default             
TYPE           : CDROM               
REGISTER TIME  : 06/18 22:53:23      
PERSISTENT     : Yes                 
SOURCE         :                     
PATH           : /var/lib/one/iso/CentOS-6.6-x86_64-minimal.iso
SIZE           : 383M                
STATE          : used                
RUNNING_VMS    : 1                   

PERMISSIONS                                                                     
OWNER          : uma                 
GROUP          : ---                 
OTHER          : ---                 

IMAGE TEMPLATE                                                                  
DEV_PREFIX="hd"

Step 2.
I create an empty block for the future system

IMAGE 20 INFORMATION                                                            
ID             : 20                  
NAME           : CentOS - 20GB       
USER           : RomanBogachev       
GROUP          : oneadmin            
DATASTORE      : default             
TYPE           : DATABLOCK           
REGISTER TIME  : 06/18 22:58:39      
PERSISTENT     : Yes                 
SOURCE         : /var/lib/one//datastores/1/6d85d9a3e6c8e13b522e13fd8b01e8ad
FSTYPE         : qcow2               
SIZE           : 19.5G               
STATE          : used                
RUNNING_VMS    : 1                   

PERMISSIONS                                                                     
OWNER          : uma                 
GROUP          : ---                 
OTHER          : ---                 

IMAGE TEMPLATE                                                                  
DEV_PREFIX="sd"
DRIVER="qcow2"

Step 3.
Create a template

CPU="1"
MEMORY="512"
SCHED_REQUIREMENTS="ID=\"0\""
OS=[BOOT="cdrom"]
NIC=[NETWORK_UNAME="oneadmin",NETWORK="Private"]
CONTEXT=[SSH_PUBLIC_KEY="",NETWORK="YES"]
DISK=[READONLY="yes",IMAGE="CentOS 6.6",IMAGE_UNAME="oneadmin"]
DISK=[IMAGE="CentOS - 20GB",IMAGE_UNAME="RomanBogachev"]
FEATURES=[ACPI="yes"]
GRAPHICS=[TYPE="VNC",LISTEN="0.0.0.0"]

Step 4.
I create a virtual machine for the subsequent installation of the OS, BUT I get an error

Thu Jun 18 23:05:35 2015 [DiM][I]: New VM state is ACTIVE.
Thu Jun 18 23:05:35 2015 [LCM][I]: New VM state is PROLOG.
Thu Jun 18 23:05:35 2015 [TM][E]: missing DISK mandatory attributes (SOURCE, TM_MAD, CLONE, DATASTORE_ID) for VM 68, DISK 0
Thu Jun 18 23:05:35 2015 [DiM][I]: New VM state is FAILED

Searching the net didn't help much. As far as I understand, it swears that these parameters are not specified. But in the neighboring template from the market, these parameters are not. And the manual doesn't say anything about them either.
Tell me, please, in which direction to dig?