Cannot create Order Line Item from the Associated Entity

Hi CRM Experts,

I am facing a weird issue, while creating an Order Line Item from the Associated Entity view.

Steps that I have followed:

• I navigated to the Products (Order Line Items) from the associated view.

• After, clicking on the Add New Order Line I get the error.

• Below is the Error.

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: System.Web.HttpUnhandledException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #732F5EA7Detail: 

<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ActivityId>48537d1e-8afc-4b4f-a654-d5f33f21b3d7</ActivityId>
<ErrorCode>-2147220970</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>System.Web.HttpUnhandledException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #732F5EA7</Message>
<Timestamp>2017-02-16T14:53:25.4591202Z</Timestamp>
<ExceptionSource i:nil="true" />
<InnerFault>
<ActivityId>48537d1e-8afc-4b4f-a654-d5f33f21b3d7</ActivityId>
<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: #B3830975</Message>
<Timestamp>2017-02-16T14:53:25.4591202Z</Timestamp>
<ExceptionSource i:nil="true" />
<InnerFault i:nil="true" />
<OriginalException i:nil="true" />
<TraceText i:nil="true" />
</InnerFault>
<OriginalException i:nil="true" />
<TraceText i:nil="true" />
</OrganizationServiceFault>

I am on 8.2.0.781 online. (This is not a new environment, this has been upgraded to 8.2).

Has anybody faced this issue before?

Thanks in advance.