The Web Service plug-in failed in OrganizationId and Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation

Question

Hi All,We are receiving below errors in our production envrionment as The Web Service plug-in failed in OrganizationId: c28f361a-8111-e211-b7f2-68b599c03df8; SdkMessageProcessingStepId: 36ccbb1b-ea3e-db11-86a7-000a3a5473e8;
 1.EntityName: userquery; Stage: 30; MessageName: RetrieveMultiple;
Exception: Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation
Inner Exception: System.IndexOutOfRangeException: #TotalRecordCount
<Data>Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception: System.IndexOutOfRangeException: #TotalRecordCount
2.EntityName: email; Stage: 30; MessageName: RetrieveMultiple
Exception: Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation
Inner Exception: System.NullReferenceException: Object reference not set to an instance of an object
<Data>Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation
Inner Exception: System.NullReferenceException: Object reference not set to an instance of an object.
3.
EntityName: plugintype; Stage: 30; MessageName: RetrieveMultiple;
<Data>Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception: System.InvalidOperationException: There is already an open DataReader associated with this Command which must be closed first.
Exception: Unhandled Exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception: System.InvalidOperationException: There is already an open DataReader associated with this Command which must be closed firstPlease give us idea on above issues.
Natarajan.V

Answer 1

Hi,
What version of CRM you are using? Does this happen when you open the case record?
We have faced the similar for Account record and was solved using below query. I am not sure about incident.
Update ACC
SET ACC.Merged = 0
from AccountBase ACC
WHERE ACC.merged is null
Do you have case merge option enabled on incident entity? As per the MS it is enabled for CRM 2013 SP1 and CRM 2015.
http://www.microsoft.com/en-us/dynamics/crm-customer-center/merge-similar-cases.aspx 
Thanks!
Kalim Khan