I have been raddling my head on this one. I cannot figure out why my plugin is not able to see the entity rce_rateexception. The entity is there and available. I have admin access. The logical name is spelled correctly. The kicker is that I first made this in Dataverse accelerator to give it a try. When I first made it in the accelerator it worked for about a week, then it could not see the rce_rateexception entity and I was getting an error saying it does not exist. Thinking it was a fluke because the dataverse accelerator is still being developed I switched and make a traditional plugin with C#. Frustratingly I am getting the same error that the entity does not exist.

Below I got my script so you can check out what I am attempting. Does anyone know what is limiting my plugins from seeing other entity’s then the one its registered on?

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;
using System;
using System.Linq;

namespace RateAcctUpdateTest
{
    /// <summary>
    /// Plugin development guide: https://docs.microsoft.com/powerapps/developer/common-data-service/plug-ins
    /// Best practices and guidance: https://docs.microsoft.com/powerapps/developer/common-data-service/best-practices/business-logic/
    /// </summary>
    public class SumAggBal : PluginBase
    {
        public SumAggBal(string unsecureConfiguration, string secureConfiguration)
            : base(typeof(SumAggBal))
        {
            // TODO: Implement your custom configuration handling
            // https://docs.microsoft.com/powerapps/developer/common-data-service/register-plug-in#set-configuration-data
        }

        // Entry point for custom business logic execution
        protected override void ExecuteDataversePlugin(ILocalPluginContext localPluginContext)
        {
            if (localPluginContext == null)
            {
                throw new ArgumentNullException(nameof(localPluginContext));
            }

            var context = localPluginContext.PluginExecutionContext;

            // TODO: Implement your custom business logic

            // Check for the entity on which the plugin would be registered
            if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
            {
               var entity = (Entity)context.InputParameters["Target"];

               // Check for entity name on which this plugin would be registered
               if (entity.LogicalName == "rce_rateexceptionaccount")
               {
                    SumAndUpdate(localPluginContext.PluginUserService, entity.Id);
               }
            }
        }

        public void SumAndUpdate(IOrganizationService service, Guid recordID)
        {
            using (var context = new OrganizationServiceContext(service))
            {
                // Query the entity records that have the same lookup value
                var records = context.CreateQuery("rce_rateexceptionaccount")
                    .Where(e => e.GetAttributeValue<EntityReference>("rce_rateexception").Id == recordID);

                // Sum the values from the specific column (Sum method is not supported in Dataverse LINQ queries)
                // var sum = records.Sum(e => e.GetAttributeValue<Money>("rce_collectedbalance").Value);

                // Manually sum the values from the specific column
                decimal sum = 0;
                foreach (var record in records)
                {
                    sum += record.GetAttributeValue<Money>("rce_collectedbalance").Value;
                }

                // Retrieve the parent record
                var parentRecord = service.Retrieve("rce_rateexception", recordID, new ColumnSet("rce_aggregatedbalance"));

                // Update the field on the parent form
                parentRecord["rce_aggregatedbalance"] = new Money(sum);
                service.Update(parentRecord);
            }
        }
    }
}

Error:

System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault]: OrganizationServiceFault: Entity 'rce_rateexception' With Id = 5aae0e77-da19-ef11-9f89-0022482f0293 Does Not Exist (Fault Detail is equal to Exception details:
ErrorCode: 0x80040265
Message: OrganizationServiceFault: Entity 'rce_rateexception' With Id = 5aae0e77-da19-ef11-9f89-0022482f0293 Does Not Exist
TimeStamp: 2024-05-28T16:13:34.6817957Z
OriginalException: PluginExecution
ExceptionSource: PluginExecution
--
).```


Access checking and name validating.