failed-modification-via-web-services

Hii 

recently upgraded FIM 2010 to FIM 2010 R2 4.1.3149 post upgrade when I do FIM MA EXport it is throwing an error"failed-modification-via-web-services" below is the detail error' Can somebody guide me here pls.

Fault Reason: The request message contains errors that prevent processing the request.\r\n\r\nFault Details: <RepresentationFailures xmlns="http://schemas.microsoft.com/2006/11/ResourceManagement" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><AttributeRepresentationFailure><AttributeType>EmployeeType</AttributeType><AttributeValue>Employee</AttributeValue><FailureMessage>Exception: ValueViolatesRegularExpression Target(s): Williams, Doug
Stack Trace: Microsoft.ResourceManagement.WebServices.Exceptions.InvalidRepresentationException: ValueViolatesRegularExpression
   at Microsoft.ResourceManagement.ActionProcessor.ActionDispatcher.ValidateObjectAttributes[T](RequestType request, Guid objectIdentifier, String objectTypeName, IEnumerable`1 parameters, OperationType operationType)
   at Microsoft.ResourceManagement.ActionProcessor.ActionDispatcher.ValidateInputRequestUpdate(RequestType request)
   at Microsoft.ResourceManagement.ActionProcessor.ActionDispatcher.ProcessInputRequest(RequestType request)
   at Microsoft.ResourceManagement.WebServices.RequestDispatcher.ExecuteAction(RequestType request)
   at Microsoft.ResourceManagement.WebServices.RequestDispatcher.ExecuteAction[ResponseBodyType](RequestType request)
   at Microsoft.ResourceManagement.WebServices.RequestDispatcher.DispatchRequest[ResponseBodyType](RequestType request, Guid requestIdentifier, Object redispatchSingleInstanceKey, Boolean isRedispatch)
   at Microsoft.ResourceManagement.WebServices.RequestDispatcher.DispatchRequest[ResponseBodyType](RequestType request)
   at Microsoft.ResourceManagement.WebServices.RequestDispatcher.DispatchRequest(RequestType request)
   at Microsoft.ResourceManagement.WebServices.ResourceManagementService.Put(Message request)</FailureMessage><AttributeFailureCode>ValueViolatesRegularExpression</AttributeFailureCode><AdditionalTextDetails>The specified attribute value does not satisfy the regular expression.</AdditionalTextDetails></AttributeRepresentationFailure><CorrelationId>84db7773-80e0-433f-98af-21a8f93662f8</CorrelationId></RepresentationFailures>