diff --git a/mirri/validation/error_logging/error_message.py b/mirri/validation/error_logging/error_message.py
index a940e35..7188a9b 100644
--- a/mirri/validation/error_logging/error_message.py
+++ b/mirri/validation/error_logging/error_message.py
@@ -357,7 +357,8 @@ class ErrorMessage():
 
     def STD46(self):
         msg = f"If date of collection/isolation/deposit/inclusion in the catalog is after 2014," \
-              f" the value of Geographic Origin must be provided. It is missing for strain {self.pk}."
+              f" the value of column Geographic Origin must be provided and associated with a country in the " \
+              f"Geographic Origin sheet. The value is missing or not associated with a country for strain {self.pk}."
         return msg