General SQL Error when Deleting a Custom Entity

I'm attempting to delete a custom entity in our Dynamics sandbox environment. We're running Dynamics 365 online. When I attempt to delete the custom entity under Solutions, I'm receiving a general SQL Server error.

Below is the contents of the log file:

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Generic SQL error.Detail:

<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">

  <ActivityId>9cf549a7-234e-406f-aa28-89aa96ab9017</ActivityId>

  <ErrorCode>-2147204784</ErrorCode>

  <ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />

  <Message>Generic SQL error.</Message>

  <Timestamp>2017-11-13T10:22:41.8801795Z</Timestamp>

  <ExceptionRetriable>false</ExceptionRetriable>

  <ExceptionSource i:nil="true" />

  <InnerFault i:nil="true" />

  <OriginalException i:nil="true" />

  <TraceText i:nil="true" />

</OrganizationServiceFault>

Was wondering if other members of the community have run into this issue and have  suggestions of where I can start to correct this issue.

Thanks so much!

David