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Error A proxy type with the name <<Entity Name>> has been defined by another assembly

Hi,

I am facing below issue.

scenario, we have multi-tenant environment in our organization, lets assume ORG-A, ORG-B & ORG-C. All are independent environment no direct relationship.

Requirement: I needs to pull data from ORG-B and show it on ORG-A on web resource. I need to connect ORG-B using service account.

Design: I created one custom action on ORG-A and register one post sync step. i am creating new connection with ORG-B CRM and try to pull the record from ORG-B and return back to ORG-A form as XML format.

Issue: while creating connection from ORG-A plug-in to ORG-B using below code and try to pull the record using LINQ. I got below error message.

A proxy type with the name <<ORG-C entityName>> has been defined by another assembly. Current type: <<ORG - C Utility class reference >>, <<ORG-C Workflow assembly>>, Version=1.0.0.0, Culture=neutral, PublicKeyToken=a894a5e902227c3d, Existing type: <<ORG - C Utility class reference >>, <<ORG - C Utility class reference >>, Version=1.0.0.0, Culture=neutral, PublicKeyToken=a1c7072af06fb43c
Parameter name: <<ORG-C entityName>>

Below is the code to create Org Service instance to connect ORG-B

private IOrganizationService GetUSDCRMService()
        {
ClientCredentials clientCredentials = new ClientCredentials();
           clientCredentials.Windows.ClientCredential = new System.Net.NetworkCredential("serviceAcc", "password", "domain"); 
            string orgUrl = GetOrgUrl() + "XRMServices/2011/Organization.svc";
            var orgService = new OrganizationServiceProxy(new Uri(orgUrl), null, clientCredentials, null);
            orgService.ServiceConfiguration.CurrentServiceEndpoint.Behaviors.Add(new ProxyTypesBehavior(Assembly.GetExecutingAssembly()));
            
            
            orgService.EnableProxyTypes();
            orgService.Timeout = new TimeSpan(0, 6, 0);
            return (IOrganizationService)orgService;
 }

There is no relation with ORG-A & ORG-C as well.
Please suggest where did I made mistake

ServiceClient serviceClient = new ServiceClient(new Uri(Environment.GetEnvironmentVariable("DataverseUrl")), Environment.GetEnvironmentVariable("DataverseClientId"), Environment.GetEnvironmentVariable("DataverseSecret"), false, log); ServiceClient service = serviceClient.Clone(Assembly.GetExecutingAssembly(), log);

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