The reason is due to some reason, the fields seems missing from respons. It must due to some recent change.
And here is an screenshot: http://imgur.com/G6P5rsS And API response to listVirtualMachines API: { "listvirtualmachinesresponse" : { "count":2 ,"virtualmachine" : [ {"id":"aaae4df6-2d01-4944-a64e-7e11f57f713d","domainid":"5a09de1c-878d-11e3-b42e-002219d77204","created":"2014-01-27T13:18:04-0800","haenable":false,"zoneid":"78e4d958-e6f2-4a68-bbc0-3cd6309530f1","hostid":"efe84a4f-224c-4291-a829-3ee4051b76a3","hostname":"yasker-box2","templateid":"59714ace-878d-11e3-b42e-002219d77204","templatename":"CentOS 5.6(64-bit) no GUI (XenServer)","templatedisplaytext":"CentOS 5.6(64-bit) no GUI (XenServer)","passwordenabled":false,"serviceofferingid":"7e2caeec-48a8-4861-bac8-36eee9a76d63","serviceofferingname":"Small Instance","cpunumber":1,"cpuspeed":500,"memory":512,"cpuused":"0.02%","networkkbsread":122,"networkkbswrite":2,"diskkbsread":0,"diskkbswrite":0,"diskioread":0,"diskiowrite":0,"guestosid":"5974b0d0-878d-11e3-b42e-002219d77204","rootdevicetype":"ROOT","securitygroup":[],"nic":[{"id":"bdf2d576-4442-44b2-a731-ac2a9fefe6aa","networkid":"b66d35d7-37fb-49ef-85a1-573f36b53cf1","networkname":"test","netmask":"255.255.255.0","gateway":"10.1.1.1","ipaddress":"10.1.1.114","isolationuri":"vlan://2011","broadcasturi":"vlan://2011","traffictype":"Guest","type":"Isolated","isdefault":true,"macaddress":"02:00:5d:c8:00:01"}],"hypervisor":"XenServer","instancename":"i-2-5-VM","tags":[],"affinitygroup":[],"displayvm":true,"isdynamicallyscalable":true}, {"id":"fa77d754-ce30-484d-b797-b5cb354d1a53","domainid":"5a09de1c-878d-11e3-b42e-002219d77204","created":"2014-01-27T13:09:10-0800","haenable":false,"zoneid":"78e4d958-e6f2-4a68-bbc0-3cd6309530f1","hostid":"efe84a4f-224c-4291-a829-3ee4051b76a3","hostname":"yasker-box2","templateid":"59714ace-878d-11e3-b42e-002219d77204","templatename":"CentOS 5.6(64-bit) no GUI (XenServer)","templatedisplaytext":"CentOS 5.6(64-bit) no GUI (XenServer)","passwordenabled":false,"serviceofferingid":"6a63aa7e-ce30-4d4a-83b3-0371ccd06a6f","serviceofferingname":"tiny","cpunumber":1,"cpuspeed":100,"memory":128,"cpuused":"0.01%","networkkbsread":196,"networkkbswrite":2,"diskkbsread":0,"diskkbswrite":0,"diskioread":0,"diskiowrite":0,"guestosid":"5974b0d0-878d-11e3-b42e-002219d77204","rootdevicetype":"ROOT","securitygroup":[],"nic":[{"id":"393853fe-16b4-4637-8240-3bf3fd8cf8e5","networkid":"9c7b673c-82c4-40ea-9c37-b0225a7d4fd1","networkname":"system-network","netmask":"255.255.255.0","gateway":"10.1.1.1","ipaddress":"10.1.1.182","isolationuri":"vlan://2007","broadcasturi":"vlan://2007","traffictype":"Guest","type":"Isolated","isdefault":true,"macaddress":"02:00:17:99:00:01"}],"hypervisor":"XenServer","instancename":"i-1-3-VM","tags":[],"affinitygroup":[],"displayvm":true,"isdynamicallyscalable":true} ] } } --Sheng
