Added Dohya

Assets/CONTENT/Game/Scripts/Workstations/Processing/ItemProcessingRecipe.cs

@@ -24,6 +24,35 @@ public sealed class ItemProcessingRecipe : ScriptableObject
             (!string.IsNullOrEmpty(inputItem.ItemId) && item.ItemId == inputItem.ItemId);
     }
 
-    private void OnValidate() =>
+    public bool TryValidateOutputPrefab(out string error)
+    {
+        error = string.Empty;
+        if (outputItem == null || outputItem.WorldPrefab == null)
+            return true;
+
+        NetworkItem prefabItem = outputItem.WorldPrefab.GetComponent<NetworkItem>();
+        if (prefabItem == null)
+        {
+            error = $"Output prefab '{outputItem.WorldPrefab.name}' has no NetworkItem.";
+            return false;
+        }
+
+        if (prefabItem.Definition == outputItem)
+            return true;
+
+        string actualOutput = prefabItem.Definition != null
+            ? prefabItem.Definition.name
+            : "None";
+        error = $"Output item '{outputItem.name}' points to prefab " +
+            $"'{outputItem.WorldPrefab.name}', but that prefab uses definition " +
+            $"'{actualOutput}'.";
+        return false;
+    }
+
+    private void OnValidate()
+    {
         recipeId = recipeId?.Trim().ToLowerInvariant();
+        if (!TryValidateOutputPrefab(out string error))
+            Debug.LogError($"Invalid processing recipe '{name}': {error}", this);
+    }
 }

Assets/CONTENT/Game/Scripts/Workstations/Processing/NetworkItemProcessingWorkstation.cs

@@ -202,12 +202,16 @@ public sealed class NetworkItemProcessingWorkstation : NetworkWorkstationControl
         outputObject.Spawn();
 
         currentItem = outputObject.GetComponent<NetworkItem>();
-        if (currentItem == null ||
+        if (currentItem == null || currentItem.Definition != recipe.OutputItem ||
             !WorkstationItemControlUtility.TryGetControl(currentItem, out _))
         {
+            string actualDefinition = currentItem != null && currentItem.Definition != null
+                ? currentItem.Definition.name
+                : "None";
             Debug.LogError(
                 $"{name} cannot produce '{recipe.OutputItem.DisplayName}': " +
-                "the output prefab must contain NetworkItem and a supported " +
+                "the output prefab must contain NetworkItem with the same " +
+                $"definition (actual: '{actualDefinition}') and a supported " +
                 "Carry or Drag interaction component.",
                 this);
             outputObject.Despawn(true);
@@ -292,6 +296,7 @@ public sealed class NetworkItemProcessingWorkstation : NetworkWorkstationControl
 
     private static bool IsRecipeValid(ItemProcessingRecipe recipe) =>
         recipe != null && recipe.InputItem != null &&
-        recipe.OutputItem != null && recipe.OutputItem.WorldPrefab != null;
+        recipe.OutputItem != null && recipe.OutputItem.WorldPrefab != null &&
+        recipe.TryValidateOutputPrefab(out _);
 
 }