I have created a txt field in the lead entity so that I can paste in a WBS that uses a hierachially outline, e.g. 1, 1.1, 1.1.1 . I paste the notes in from a onenote workbook used to qualify a lead (do not want to use dialogs until I am in Opportunity. The issues is that when I attempt the convert the lead to an opportunity, I get the following error (String length too Long)

Here is the actual error catch from the runtime... How can I get around this? Is this related to the 1 to N relationship settings? I want to maintain the content and the formatting when I convert from lead to opp...
Unhandled Exception: System.ServiceModel.FaultException'1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: A validation error occurred. The length of the 'description' attribute of the 'account' entity exceeded the maximum allowed length of '2000'.Detail:
<OrganizationServiceFault xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/xrm/2011/Contracts">
<ErrorCode>-2147204303</ErrorCode>
<ErrorDetails xmlns:d2p1="http://schemas.datacontract.org/2004/07/System.Collections.Generic">
<KeyValuePairOfstringanyType>
<d2p1:key>CallStack</d2p1:key>
<d2p1:value xmlns:d4p1="http://www.w3.org/2001/XMLSchema" i:type="d4p1:string"> at Microsoft.Crm.Extensibility.VersionedPluginProxyStepBase.Execute(PipelineExecutionContext context)
at Microsoft.Crm.Extensibility.Pipeline.Execute(PipelineExecutionContext context)
at Microsoft.Crm.Extensibility.MessageProcessor.Execute(PipelineExecutionContext context)
at Microsoft.Crm.Extensibility.InternalMessageDispatcher.Execute(PipelineExecutionContext context)
at Microsoft.Crm.Extensibility.ExternalMessageDispatcher.ExecuteInternal(IInProcessOrganizationServiceFactory serviceFactory, IPlatformMessageDispatcherFactory dispatcherFactory, String messageName, String requestName, Int32 primaryObjectTypeCode, Int32 secondaryObjectTypeCode, ParameterCollection fields, CorrelationToken correlationToken, CallerOriginToken originToken, UserAuth userAuth, Guid callerId, Guid transactionContextId, Int32 invocationSource, Nullable'1 requestId, Version endpointVersion)
at Microsoft.Crm.Extensibility.ExternalMessageDispatcher.Execute(IInProcessOrganizationServiceFactory serviceFactory, IPlatformMessageDispatcherFactory dispatcherFactory, String messageName, String requestName, Int32 primaryObjectTypeCode, Int32 secondaryObjectTypeCode, ParameterCollection fields, CorrelationToken correlationToken, CallerOriginToken originToken, UserAuth userAuth, Guid callerId, Guid transactionContextId, Int32 invocationSource, Nullable'1 requestId)
at Microsoft.Crm.Extensibility.OrganizationSdkServiceInternal.ExecuteRequest(OrganizationRequest request, CorrelationToken correlationToken, CallerOriginToken callerOriginToken, WebServiceType serviceType)
at Microsoft.Crm.Extensibility.OrganizationSdkServiceInternal.Execute(OrganizationRequest request, CorrelationToken correlationToken, CallerOriginToken callerOriginToken, WebServiceType serviceType)</d2p1:value>
</KeyValuePairOfstringanyType>
</ErrorDetails>
<Message>A validation error occurred. The length of the 'description' attribute of the 'account' entity exceeded the maximum allowed length of '2000'.</Message>
<Timestamp>2011-12-30T00:05:53.2251252Z</Timestamp>
<InnerFault i:nil="true" />
<TraceText>
[Microsoft.Crm.ObjectModel: Microsoft.Crm.ObjectModel.TargetAttributeValidationPlugin]
[9223a793-ed74-4280-a1fa-2231e0db9424: TargetAttributeValidationPlugin]
</TraceText>
</OrganizationServiceFault>