Im trying to get the participants data from API response.. //Level 1 Map<String, Object> MapLv1 = (Map<String, Object>) JSON.deserializeUntyped(parser); system.debug('MapLv1 Conversation Summary ==>'+MapLv1); List<Object> arrayConversationSummary = new list <Object>(); for (Object o : (List<Object>)Maplv1.get('participants')){ arrayConversationSummary.add(o); } As you can see, i tried to get the participants array data and store it inside list of object.. this is the response example : { "id": "3a8c8cce-1630-4b97-addf-ebffd22360ed", "startTime": "2018-11-05T10:39:29.517Z", "endTime": "2018-11-05T10:45:58.398Z", "address": "tel:+0000", "participants": [ { "id": "3fe49839-1297-464c-bab5-2b914f9e0257", "startTime": "2018-11-05T10:39:29.517Z", "endTime": "2018-11-05T10:44:57.877Z", "connectedTime": "2018-11-05T10:39:29.546Z", "name": "Mobile", "queueId": "f7866f57-3522-487e-9a62-7889cd68f782", "queueName": "Test Queue", "purpose": "customer", "participantType": "External", "address": "tel:0000", "ani": "tel:0000", "aniName": "Mobile", "dnis": "tel:+0000", "wrapupRequired": false, "attributes": { "SF_WorkSpace": "https://cs5.salesforce.com/console#https%3A%2F%2Fcs5.salesforce.com%2F003O000001COyPi%3Fkey%3D081932903944|%2Fapex%2FPolicyInfoPage%3FparentId%3D1159%26contactID%3D003O000001COyPi%26sessionID%3D003O000001COyPi-005900000052HdyAAE-20181105-05e5d7f02c24c2ee31622061bca94bd4%26policyNo%3D112-01-01%26entity%3DAFI%26policyApp%30000D%26agentS00ervicingCode%3D%26agentProducingCode%3D|%2Fapex%2FClaimInfoPage%3FparentId%3D1159%26contactID%3D003O000001COyPi%26sessionID%3D003O000001COyPi-005900000052HdyAAE-20181105-05e5d7f02c24c2ee31622061bca94bd4%26policyNo%3D112-01-01%26entity%3DAFI%26policyApp000%3D%26agentServicingCode%3D%26agentProducingCode%3D|%2Fapex%2FRHSInfoPage%3FparentId%3D1159%26contactID%3D003O000001COyPi%26sessionID%3D003O000001COyPi-005900000052HdyAAE-20181105-05e5d7f02c24c2ee31622061bca94bd4%26policyNo%3D112-01-01%26entity%3DAFI%26policyApp%3D%26agentServicingCode%3D%26agentProducingCode%3D|%2Fapex%2FCHSInfoPage%3FparentId%3D1159%26contactID%3D003O000001COyPi%26sessionID%3D003O000001COyPi-005900000052HdyAAE-20181105-05e5d7f02c24c2ee31622061bca94bd4%26policyNo%3D112-01-01%26entity%3DAFI%26policyApp%3D%26agentServicingCode%3D%26agentProducingCode%3D|%2Fapex%2FInquiryInfoPage%3FparentId%3D1159%26contactID%3D003O000001COyPi%26sessionID%3D003O000001COyPi-005900000052HdyAAE-20181105-05e5d7f02c24c2ee31622061bca94bd4%26policyNo%3D112-01-01%26entity%3DAFI%26policyApp%3D%26agentServicingCode%3D%26agentProducingCode%3D", "SF_WorkSpaceAssociations": "{\"interactionId\":\"0000-1630-0000-addf-0000000\",\"Contacts\":{\"00000\":{\"text\":\"PureCloud 0000- Contact\",\"id\":\"00000\",\"reason\":\"Workspace Transfer\",\"select\":true}},\"Relates\":{}}", "CWC_allowACD": "true" }, "calls": [ { "state": "terminated", "id": "c339db69-12ac-4cad-9f71-6490c1778b46", "direction": "inbound", "recording": false, "recordingState": "none", "muted": false, "confined": false, "held": false, "segments": [ { "startTime": "2018-11-05T10:39:29.520Z", "endTime": "2018-11-05T10:39:29.546Z", "type": "System", "howEnded": "Interact" }, { "startTime": "2018-11-05T10:39:29.546Z", "endTime": "2018-11-05T10:44:57.877Z", "type": "Interact", "howEnded": "Disconnect", "disconnectType": "endpoint" } ], "disconnectType": "endpoint", "connectedTime": "2018-11-05T10:39:29.546Z", "disconnectedTime": "2018-11-05T10:44:57.877Z", "disconnectReasons": [], "provider": "Edge", "self": { "name": "Mobile", "nameRaw": "", "addressNormalized": "tel:000000", "addressRaw": "sip:[email protected]", "addressDisplayable": "unavailable" }, "other": { "name": "Jakarta, Indonesia", "nameRaw": "", "addressNormalized": "tel:+00000", "addressRaw": "sip:00000@000-000:5060", "addressDisplayable": "unavailable" } } ] but when I check the debug, the participants data start from 'address' not from 'id', and the parsing result only get the address, ani, and aniName from the JSON response.. there`s no Id.. [![enter image description here][1]][1] when I put the response to Map, the Id disappeared [![enter image description here][2]][2] [1]: https://i.sstatic.net/qRqgv.png [2]: https://i.sstatic.net/WDV1C.png