diff --git a/django/api/constants/constants.py b/django/api/constants/constants.py
index 857f224a..0c35b473 100644
--- a/django/api/constants/constants.py
+++ b/django/api/constants/constants.py
@@ -940,7 +940,7 @@ class LDVDataColumnMapping(Enum):
         "preparation_functions": [prepare_ldv_data],
         "validation_functions": [
             {"function": validate_field_values, "columns": [], "kwargs": {"indices_offset":2, "fields_and_values": LDV_DATA_VALID_FIELD_VALUES, "delimiter": ","}},
-            {"function": format_postal_codes, "columns": ["PostalCode"], "kwargs": {"indices_offset":2, "validate": True}}
+            {"function": format_postal_codes, "columns": ["PostalCode"], "kwargs": {"indices_offset":2, "validate": True, "allow_empty": True}}
         ]
     },