We are dialing the OB Campaign in Predictive mode.
TServer -8.0, Media Gateway - AudioCode Mediant 1000.
Some number has been disposed by the dialer as "Dial Error'. We are analying the logs, the "Object not known' showing in the routing point. Actually when will "object not known" error occur?
I attached the sip server logs for yours reference.
00:03:55.296 Trc 04541 RequestMakePredictiveCall received from [452] (0000000d OCS 192.168.1.2:2296)
message RequestMakePredictiveCall
	AttributeThisDN	'9104'
	AttributeOtherDN	'[color=red]0018703777915[/color]'
	AttributeTimeout	60
	AttributeUserData	[758] 00 1c 00 00..
		'GSW_PHONE'	'8703777915'
		'GSW_TZ_OFFSET'	19800
		'GSW_PHONE'	'8703777915'
		'cti_FNAME'	'Linda'
		'cti_LNAME'	'Williams'
		'cti_ADDRESS'	'527scherry'
		'cti_CITY'	'Dumas'
		'cti_STATE'	'AR'
		'cti_ZIP'	'71639'
		'cti_DISPOSITION'	''
		'GSW_CALLING_LIST'	'CST_Calling List'
		'GSW_CAMPAIGN_NAME'	'DSR_US'
		'InteractionType'	'Outbound'
		'InteractionSubtype'	'OutboundNew'
		'GSW_RECORD_HANDLE'	6015
		'GSW_APPLICATION_ID'	109
		'GSW_CAMPAIGN_GROUP_DBID'	106
		'GSW_CALLING_LIST_DBID'	115
		'GSW_SWITCH_DBID'	101
		'GSW_CAMPAIGN_GROUP_NAME'	'DSR_Campaign@DSR_Agentgroup'
		'GSW_CAMPAIGN_GROUP_DESCRIPTION'	''
		'GSW_CHAIN_ID'	1499
		'GSW_ATTEMPTS'	3
		'GSW_AGENT_ID'	''
		'GSW_CALL_RESULT'	28
		'GSW_TZ_NAME'	'IST'
		'GSW_CALL_ATTEMPT_GUID'	'L2IA6VFDVH75R4KLD1T2C3M1SO000542'
		'GSW_CONTACT_MEDIA_TYPE'	'voice'
	AttributeExtensions	[2] 00 00..
	AttributeReferenceID	5800
00:03:55.296 Int 04543 Interaction message "RequestMakePredictiveCall" received from 452 ("OCS")
00:03:55.296  -- created: CRequest@3251700 RequestMakePredictiveCall-OCS[452]/5800
00:03:55.296:(1) SIPS:LOGBLOCK:BEGIN:REQUEST:[
00:03:55.296 +++ CIFace::Request +++
   -- new invoke
  Parsed: RequestMakePredictiveCall
  From: OCS[452]/5800
  Numbers: +<9104> -<0018703777915>
  Status: parsed:1 queued:0 sent:0 acked:0 preevent:0 event:0 context:0 transferred:0
  -----
   -- validate
   -- state check: ok
  CIFace: Sent CRequest@3251700 RequestMakePredictiveCall-OCS[452]/5800
  FinishRequest CRequest@3251700 RequestMakePredictiveCall-OCS[452]/5800
   IFace stats: q=0 s=0
   -- complete
00:03:55.296:(1) Number:[0018703777915] is not internal, looking for service
00:03:55.296:(1) GetTheBestNode:: server list for 0018703777915 exists, but has no validated entries
00:03:55.296:(1) Number:0018703777915 prefix: gateway list not empty, but none can be selected now
00:03:55.296:(1) Unable to resolve number for DN:0018703777915
00:03:55.296:(1) SIPDM: failed to get registration info for 0018703777915
00:03:55.296:(1) SIPDM: failed to get registration info for 0018703777915
00:03:55.296:(1) ERROR: 10000002, GetDeviceManager().ResolveCalledDevice(context, *thisDevice, destination, otherDevice), SipCallManagerOutbound.cpp,40
  Response (1143): for CRequest@3251700 RequestMakePredictiveCall-OCS[452]/5800
00:03:55.296 Trc 36002 Request rejected: error code 1143(Object not known)
@00:03:55.2960 [0] 8.0.400.49 send_to_client: message EventError
	(Object not known)
	AttributeEventSequenceNumber	0000000000070da5
	AttributeTimeinuSecs	296000
	AttributeTimeinSecs	1299522835 (00:03:55)
	AttributeExtensions	[2] 00 00..
	AttributeErrorCode	1143
	AttributeErrorMessage	'Object not known'
	AttributeReferenceID	5800
	AttributeUserData	[758] 00 1c 00 00..
		'GSW_PHONE'	'8703777915'
		'GSW_TZ_OFFSET'	19800
		'GSW_PHONE'	'8703777915'
		'cti_FNAME'	'Linda'
		'cti_LNAME'	'Williams'
		'cti_ADDRESS'	'527scherry'
		'cti_CITY'	'Dumas'
		'cti_STATE'	'AR'
		'cti_ZIP'	'71639'
		'cti_DISPOSITION'	''
		'GSW_CALLING_LIST'	'CST_Calling List'
		'GSW_CAMPAIGN_NAME'	'DSR_US'
		'InteractionType'	'Outbound'
		'InteractionSubtype'	'OutboundNew'
		'GSW_RECORD_HANDLE'	6015
		'GSW_APPLICATION_ID'	109
		'GSW_CAMPAIGN_GROUP_DBID'	106
		'GSW_CALLING_LIST_DBID'	115
		'GSW_SWITCH_DBID'	101
		'GSW_CAMPAIGN_GROUP_NAME'	'DSR_Campaign@DSR_Agentgroup'
		'GSW_CAMPAIGN_GROUP_DESCRIPTION'	''
		'GSW_CHAIN_ID'	1499
		'GSW_ATTEMPTS'	3
		'GSW_AGENT_ID'	''
		'GSW_CALL_RESULT'	28
		'GSW_TZ_NAME'	'IST'
		'GSW_CALL_ATTEMPT_GUID'	'L2IA6VFDVH75R4KLD1T2C3M1SO000542'
		'GSW_CONTACT_MEDIA_TYPE'	'voice'
	AttributeTimeout	60
	AttributeOtherDN	'0018703777915'
	AttributeThisDN	'9104'
	AttributeClientID	13
00:03:55.296 Int 04545 Interaction message "EventError" sent to 452 ("OCS")
00:03:55.296 Trc 04542 EventError sent to [452] (0000000d OCS 192.168.1.2:2296)
  FinishRequest: second time for CRequest@3251700 RequestMakePredictiveCall-OCS[452]/5800
00:03:55.296 --- CIFace::Request ---
00:03:55.296:(1) 00:03:55.296:(1) SIPS:LOGBLOCK:END:REQUEST:]
00:03:55.296  -- deleted: CRequest@3251700 RequestMakePredictiveCall-OCS[452]/5800
00:03:55.296 Trc 04541 RequestDistributeUserEvent received from [452] (0000000d OCS 192.168.1.2:2296)
message RequestDistributeUserEvent
	AttributeCommunicationDN	'CommDN'
	AttributeUserData	[279] 00 0b 01 00..
		'GSW_STAT_EVENT'	14
		'GSW_CAMPAIGN_DBID'	105
		'GSW_CALL_LIST_DBID'	115
		'GSW_GROUP_DBID'	109
		'GSW_AGENT_DBID'	0
		'GSW_CALL_RESULT'	41
		'GSW_CAMPAIGN_COMPLETE'	121
		'GSW_LIST_COMPLETE'	0
		'GSW_DIAL_MODE'	1
		'GSW_APPLICATION_ID'	109
		'GSW_SCHED_REC_NUM'	0
00:03:55.296 Int 04543 Interaction message "RequestDistributeUserEvent" received from 452 ("OCS")
-- Absent ThisDN, CommDN was used
Thanks in Advance.