diff --git a/core/admin.py b/core/admin.py
index 82ad95ae..8f5f69ea 100644
--- a/core/admin.py
+++ b/core/admin.py
@@ -504,6 +504,7 @@ class VendorAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):  # type:
         "uuid",
         "modified",
         "created",
+        "last_processing_response",
     )
     form = VendorForm
     general_fields = [
@@ -516,7 +517,7 @@ class VendorAdmin(FieldsetsMixin, ActivationActionsMixin, ModelAdmin):  # type:
         "users",
     ]
     additional_fields = [
-        "additional_fields",
+        "last_processing_response",
         "b2b_auth_token",
     ]
 
diff --git a/core/utils/__init__.py b/core/utils/__init__.py
index 8357c26d..596b0f55 100644
--- a/core/utils/__init__.py
+++ b/core/utils/__init__.py
@@ -139,10 +139,12 @@ def get_project_parameters() -> Any:
     configuration source, formats their keys to lowercase, and then stores
     them in the cache for a limited period.
     """
-    parameters = cache.get("parameters")
+    parameters = cache.get("parameters", {})
 
     if not parameters:
         for key in EXPOSABLE_KEYS:
+            if not getattr(config, key):
+                continue
             parameters[key.lower()] = getattr(config, key)
 
         cache.set("parameters", parameters, 60 * 60)