diff --git a/src/AasxCsharpLibrary/IOperationReceiver.cs b/src/AasxCsharpLibrary/IOperationReceiver.cs
index 577ad66b..e21845fe 100644
--- a/src/AasxCsharpLibrary/IOperationReceiver.cs
+++ b/src/AasxCsharpLibrary/IOperationReceiver.cs
@@ -7,5 +7,6 @@ public interface IOperationReceiver
     {
         OperationResult OnOperationInvoke(IOperation operation, string submodelId, int? timestamp, string requestId);
         Task<OperationResult> OnOperationInvokeAsync(string handleId, IOperation operation, string submodelId, int? timestamp, string requestId);
+        OperationResult GetResult(string handleId);
     }
 }
\ No newline at end of file
diff --git a/src/AasxServerStandardBib/OperationInvoker.cs b/src/AasxServerStandardBib/OperationInvoker.cs
index 71c9f171..fa8e22ed 100644
--- a/src/AasxServerStandardBib/OperationInvoker.cs
+++ b/src/AasxServerStandardBib/OperationInvoker.cs
@@ -1,4 +1,3 @@
-using System.Collections.Generic;
 using AdminShellNS.Models;
 using AdminShellNS;
 using System.Threading.Tasks;
@@ -8,8 +7,6 @@ namespace AasOperationInvocation
     public class OperationInvoker : IOperationInvoker
     {
         public IOperationCommand Command { get; init; }
-
-        private static readonly Dictionary<string, OperationHandle> _asyncHandles = [];
         private static long _asyncHandleCounter = 0;
 
         public OperationInvoker(IOperationCommand command)
@@ -29,30 +26,7 @@ public Task<OperationResult> InvokeAsync(out OperationHandle operationHandle)
                 ExecutionState = ExecutionState.InitiatedEnum,
                 Task = Command.ExecuteAsync("" + _asyncHandleCounter++)
             };
-            _asyncHandles.Add(operationHandle.HandleId, operationHandle);
             return operationHandle.Task;
         }
-
-        public static OperationResult GetAsyncResult(string handleId)
-        {
-            OperationHandle operationHandle = _asyncHandles[handleId];
-
-            // Remove if terminated
-            if ((int) operationHandle.ExecutionState > 1) {
-                _asyncHandles.Remove(handleId);
-                return operationHandle.Task.Result;
-            }
-            
-            return new OperationResult() {
-                RequestId = operationHandle.RequestId,
-                ExecutionState = operationHandle.ExecutionState,
-                Message = ""
-            };
-        }
-
-        public static void UpdateExecutionState(string handleId, ExecutionState executionState)
-        {
-            _asyncHandles[handleId].ExecutionState = executionState;
-        }
     }
 }
\ No newline at end of file
diff --git a/src/AasxServerStandardBib/OperationReceiver.cs b/src/AasxServerStandardBib/OperationReceiver.cs
index 464fb9c5..0df73855 100644
--- a/src/AasxServerStandardBib/OperationReceiver.cs
+++ b/src/AasxServerStandardBib/OperationReceiver.cs
@@ -7,6 +7,11 @@ namespace AasOperationInvocation
 {
     public class OperationReceiver : IOperationReceiver
     {
+        public OperationResult GetResult(string handleId)
+        {
+            throw new NotImplementedException("invoking operations not yet supported");
+        }
+
         public OperationResult OnOperationInvoke(IOperation operation, string submodelId, int? timestamp, string requestId)
         {
             throw new NotImplementedException("invoking operations not yet supported");
@@ -14,18 +19,6 @@ public OperationResult OnOperationInvoke(IOperation operation, string submodelId
 
         public Task<OperationResult> OnOperationInvokeAsync(string handleId, IOperation operation, string submodelId, int? timestamp, string requestId)
         {
-            // Console.WriteLine("Task initiated...");
-            // OperationInvoker.UpdateExecutionState(handleId, ExecutionState.InitiatedEnum);
-
-            // Console.WriteLine("Task running...");
-            // OperationInvoker.UpdateExecutionState(handleId, ExecutionState.RunningEnum);
-            // await Task.Delay(5000);
-
-            // Console.WriteLine("Task done...");
-            // OperationInvoker.UpdateExecutionState(handleId, ExecutionState.CompletedEnum);
-
-            // return new OperationResult() { ExecutionState = ExecutionState.CompletedEnum };
-
             throw new NotImplementedException("invoking operations not yet supported");
         }
 
diff --git a/src/AasxServerStandardBib/Services/SubmodelService.cs b/src/AasxServerStandardBib/Services/SubmodelService.cs
index 9a5b6d35..e233b241 100644
--- a/src/AasxServerStandardBib/Services/SubmodelService.cs
+++ b/src/AasxServerStandardBib/Services/SubmodelService.cs
@@ -672,7 +672,7 @@ public OperationHandle InvokeOperationAsync(string submodelIdentifier, string id
 
         public OperationResult GetOperationAsyncResult(string handleId)
         {
-            return OperationInvoker.GetAsyncResult(handleId);
+            return _operationReceiver.GetResult(handleId);
         }
     }
 }