dcae service_change_handler gets ASDC POL5000

deployed ONAP OOM Beijing environment behind proxy. Everything seems fine but after deploying DCAE service_change_handler fails with following logs. Any help would be appreciated

18-07-30 19:15:38 service-change-handler INFO [sch.core:181] - Setup logging: Rolling appender DEFAULT
18-07-30 19:15:38 service-change-handler INFO [org.onap.sdc.impl.DistributionClientImpl:270] - DistributionClient - init
18-07-30 19:15:38 service-change-handler DEBUG [org.onap.sdc.impl.DistributionClientImpl:364] - get ueb cluster server list from component(configuration file)
18-07-30 19:15:38 service-change-handler DEBUG [org.onap.sdc.http.SdcConnectorClient:126] - about to perform getServerList. requestId= 3b84d294-1612-4737-9625-1a9f28eaefe6 url= /sdc/v1/artifactTypes
18-07-30 19:15:38 service-change-handler DEBUG [org.onap.sdc.http.HttpAsdcClient:266] - url to send https://sdc-be.onap:8443/sdc/v1/artifactTypes
18-07-30 19:15:39 service-change-handler DEBUG [org.onap.sdc.http.HttpAsdcClient:279] - GET Response Status 200
18-07-30 19:15:39 service-change-handler DEBUG [org.onap.sdc.impl.DistributionClientImpl:358] - Artifact types: [DCAE_TOSCA, DCAE_JSON, DCAE_POLICY, DCAE_DOC, DCAE_EVENT, DCAE_INVENTORY_TOSCA, DCAE_INVENTORY_JSON, DCAE_INVENTORY_POLICY, DCAE_INVENTORY_DOC, DCAE_INVENTORY_BLUEPRINT, DCAE_INVENTORY_EVENT] were validated with ASDC server
18-07-30 19:15:39 service-change-handler DEBUG [org.onap.sdc.impl.DistributionClientImpl:330] - create keys
18-07-30 19:15:39 service-change-handler INFO [com.att.nsa.apiClient.http.HttpClient:595] - POST http://message-router.onap:3904/apiKeys/create (anonymous) ...
18-07-30 19:15:39 service-change-handler INFO [com.att.nsa.apiClient.http.HttpClient:628] - --> HTTP/1.1 200 OK
18-07-30 19:15:39 service-change-handler DEBUG [com.att.nsa.apiClient.http.HttpClient:738] - Consuming the entity.
18-07-30 19:15:39 service-change-handler DEBUG [org.onap.sdc.http.SdcConnectorClient:143] - about to perform registerAsdcTopics. requestId= d1c0900a-dc8c-41a1-abef-3e3f456fb6c9 url= /sdc/v1/registerForDistribution
18-07-30 19:15:39 service-change-handler ERROR [org.onap.sdc.http.SdcConnectorClient:316] - status from ASDC is org.onap.sdc.http.HttpAsdcResponse@179806f3
18-07-30 19:15:39 service-change-handler ERROR [org.onap.sdc.http.SdcConnectorClient:317] - DistributionClientResultImpl [responseStatus=ASDC_SERVER_PROBLEM, responseMessage=ASDC server problem]
18-07-30 19:15:39 service-change-handler DEBUG [org.onap.sdc.http.SdcConnectorClient:320] - error from ASDC is: {
"requestError": {
"policyException": {
"messageId": "POL5000",
"text": "Error: Internal Server Error. Please try again later.",
"variables": []
}
}
}
18-07-30 19:15:39 service-change-handler WARN [com.att.nsa.apiClient.http.HttpClient:588] - DELETE http://message-router.onap:3904/apiKeys/87ZxUUdQrkVCiRbC will send credentials over a clear channel.
18-07-30 19:15:39 service-change-handler INFO [com.att.nsa.apiClient.http.HttpClient:595] - DELETE http://message-router.onap:3904/apiKeys/87ZxUUdQrkVCiRbC (as 87ZxUUdQrkVCiRbC) ...
18-07-30 19:15:39 service-change-handler INFO [com.att.nsa.apiClient.http.HttpClient:628] - --> HTTP/1.1 200 OK
18-07-30 19:15:39 service-change-handler DEBUG [com.att.nsa.apiClient.http.HttpClient:738] - Consuming the entity.
18-07-30 19:15:39 service-change-handler ERROR [sch.core:171] - DistributionClientResultImpl [responseStatus=ASDC_SERVER_PROBLEM, responseMessage=ASDC server problem]
18-07-30 19:15:39 service-change-handler INFO [sch.core:205] - Done