diff --git a/.gitignore b/.gitignore
index 6d6cef476da10824272a8c80600560dd9256dd54..58ea41ca1bcaeb84387bb6b0a8d45cfc41c79119 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@ integration/*.html
 
 # Integration logs
 integration/*.log
+*.env
\ No newline at end of file
diff --git a/ldvspec/lofardata/views.py b/ldvspec/lofardata/views.py
index bf226ed4764ac77e46cc162795c912e7c9ccf618..742ccb6ee3cf83f46434342fdec401c2abeeb785 100644
--- a/ldvspec/lofardata/views.py
+++ b/ldvspec/lofardata/views.py
@@ -151,15 +151,27 @@ def retrieve_general_dataproduct_information(sas_id):
                                                                      "dataproduct_type",
                                                                      "project",
                                                                      "location",
-                                                                     "activity").distinct()
-    combined_data_products_on_key = {}
+                                                                     "activity",
+                                                                     "additional_meta").distinct()
+    combined_data_products_on_key = combine_dataproducts_on_key(data_products, {})
+
+    return combined_data_products_on_key
+
+
+def combine_dataproducts_on_key(data_products, combined_data_products):
     for data_product in data_products:
-        for key, value in data_product.items():
-            if combined_data_products_on_key.get(key) and value not in combined_data_products_on_key.get(key):
-                combined_data_products_on_key[key].append(value)
-            else:
-                combined_data_products_on_key[key] = [value]
+        combined_data_products = fill_unique_nested_dict(data_product, combined_data_products)
+    return combined_data_products
+
 
+def fill_unique_nested_dict(data_product, combined_data_products_on_key):
+    for key, value in data_product.items():
+        if isinstance(value, dict):
+            combined_data_products_on_key = fill_unique_nested_dict(value, combined_data_products_on_key)
+        elif combined_data_products_on_key.get(key) and value not in combined_data_products_on_key.get(key):
+            combined_data_products_on_key[key].append(value)
+        else:
+            combined_data_products_on_key[key] = [value]
     return combined_data_products_on_key