Hello,
I have workflow running when the new lead created and the new leads will be added into marketing list based on their topic. The new leads come from online form work perfect. However, when I import leads, 70% of the leads from import trigger work flow and added into marketing list showing status as succeed. 30% of leads triggered workflow but in waiting status with some error message.
Screen shots and error message as follows


The error message as follows:
Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: An unexpected error occurred.Detail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>An unexpected error occurred.</Message>
<Timestamp>2017-11-01T12:16:15.8327956Z</Timestamp>
<InnerFault>
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:d3p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>System.InvalidOperationException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #3413838A</Message>
<Timestamp>2017-11-01T12:16:15.8327956Z</Timestamp>
<InnerFault i:nil="true" />
<TraceText i:nil="true" />
</InnerFault>
<TraceText i:nil="true" />
</OrganizationServiceFault>
at Microsoft.Crm.Extensibility.OrganizationSdkServiceInternal.RetrieveMultiple(QueryBase query, CorrelationToken correlationToken, CallerOriginToken callerOriginToken, WebServiceType serviceType)
at Microsoft.Crm.Extensibility.InprocessServiceProxy.RetrieveMultipleCore(QueryBase query)
at Microsoft.Crm.Workflow.WorkflowAssemblyResolver.RetrieveActivityNameAndGroupName(String assemblyQualifiedName, String& activityName, String& activityGroupName)
Thanks a lot!
Carys
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