diff --git a/app/MindWork AI Studio/Assistants/ERI/AssistantERI.razor.cs b/app/MindWork AI Studio/Assistants/ERI/AssistantERI.razor.cs
index 2effc79a..bf2476c6 100644
--- a/app/MindWork AI Studio/Assistants/ERI/AssistantERI.razor.cs	
+++ b/app/MindWork AI Studio/Assistants/ERI/AssistantERI.razor.cs	
@@ -414,6 +414,7 @@ public partial class AssistantERI : AssistantBaseCore
         var dialogParameters = new DialogParameters<EmbeddingMethodDialog>
         {
             { x => x.IsEditing, false },
+            { x => x.UsedEmbeddingMethodNames, this.embeddings.Select(n => n.EmbeddingName).ToList() },
         };
         
         var dialogReference = await this.DialogService.ShowAsync<EmbeddingMethodDialog>("Add Embedding Method", dialogParameters, DialogOptions.FULLSCREEN);
@@ -435,6 +436,8 @@ public partial class AssistantERI : AssistantBaseCore
             { x => x.DataDescription, embeddingInfo.Description },
             { x => x.DataUsedWhen, embeddingInfo.UsedWhen },
             { x => x.DataLink, embeddingInfo.Link },
+            
+            { x => x.UsedEmbeddingMethodNames, this.embeddings.Select(n => n.EmbeddingName).ToList() },
             { x => x.IsEditing, true },
         };
 
@@ -471,6 +474,7 @@ public partial class AssistantERI : AssistantBaseCore
         {
             { x => x.IsEditing, false },
             { x => x.AvailableEmbeddings, this.embeddings },
+            { x => x.UsedRetrievalProcessNames, this.retrievalProcesses.Select(n => n.Name).ToList() },
         };
         
         var dialogReference = await this.DialogService.ShowAsync<RetrievalProcessDialog>("Add Retrieval Process", dialogParameters, DialogOptions.FULLSCREEN);
@@ -495,6 +499,7 @@ public partial class AssistantERI : AssistantBaseCore
             
             { x => x.IsEditing, true },
             { x => x.AvailableEmbeddings, this.embeddings },
+            { x => x.UsedRetrievalProcessNames, this.retrievalProcesses.Select(n => n.Name).ToList() },
         };
 
         var dialogReference = await this.DialogService.ShowAsync<EmbeddingMethodDialog>("Edit Retrieval Process", dialogParameters, DialogOptions.FULLSCREEN);
diff --git a/app/MindWork AI Studio/Dialogs/EmbeddingMethodDialog.razor.cs b/app/MindWork AI Studio/Dialogs/EmbeddingMethodDialog.razor.cs
index feaf49a2..c2733fbc 100644
--- a/app/MindWork AI Studio/Dialogs/EmbeddingMethodDialog.razor.cs	
+++ b/app/MindWork AI Studio/Dialogs/EmbeddingMethodDialog.razor.cs	
@@ -39,6 +39,12 @@ public partial class EmbeddingMethodDialog : ComponentBase
     /// </summary>
     [Parameter]
     public string DataLink { get; set; } = string.Empty;
+
+    /// <summary>
+    /// The embedding method names that are already used. The user must choose a unique name.
+    /// </summary>
+    [Parameter]
+    public IReadOnlyList<string> UsedEmbeddingMethodNames { get; set; } = new List<string>();
     
     /// <summary>
     /// Should the dialog be in editing mode?
@@ -89,6 +95,9 @@ public partial class EmbeddingMethodDialog : ComponentBase
         if (name.Length > 26)
             return "The embedding name must not be longer than 26 characters.";
         
+        if (this.UsedEmbeddingMethodNames.Contains(name))
+            return $"The embedding method name '{name}' is already used. Please choose a unique name.";
+        
         return null;
     }
     
diff --git a/app/MindWork AI Studio/Dialogs/RetrievalProcessDialog.razor.cs b/app/MindWork AI Studio/Dialogs/RetrievalProcessDialog.razor.cs
index 371677b0..df01a7c1 100644
--- a/app/MindWork AI Studio/Dialogs/RetrievalProcessDialog.razor.cs	
+++ b/app/MindWork AI Studio/Dialogs/RetrievalProcessDialog.razor.cs	
@@ -47,6 +47,12 @@ public partial class RetrievalProcessDialog : ComponentBase
     /// </summary>
     [Parameter]
     public IReadOnlyList<EmbeddingInfo> AvailableEmbeddings { get; set; } = new List<EmbeddingInfo>();
+
+    /// <summary>
+    /// The retrieval process names that are already used. The user must choose a unique name.
+    /// </summary>
+    [Parameter]
+    public IReadOnlyList<string> UsedRetrievalProcessNames { get; set; } = new List<string>();
     
     /// <summary>
     /// Should the dialog be in editing mode?
@@ -103,6 +109,9 @@ public partial class RetrievalProcessDialog : ComponentBase
         if (name.Length > 26)
             return "The retrieval process name must not be longer than 26 characters.";
         
+        if (this.UsedRetrievalProcessNames.Contains(name))
+            return $"The retrieval process name '{name}' must be unique. Please choose a different name.";
+        
         return null;
     }