diff --git a/validation/error_logging/error_message.py b/validation/error_logging/error_message.py
index ad52e62..988caa4 100644
--- a/validation/error_logging/error_message.py
+++ b/validation/error_logging/error_message.py
@@ -452,11 +452,6 @@ class ErrorMessage():
         return (f"The 'type' for strain with accessionNumber {self.pk} is incorrect."
               f"Your value is {self.value} and the accepted values are 1, 2.")
         
-    def STD64(self): 
-        return (f"The 'status' for strain with accessionNumber {self.pk} is incorrect."
-                "When the type equal 2 the status must contain the type," 
-                "if the type equal 2 the status must have a null value.")
-        
     def STD65(self): 
         return (f"The 'status' for strain with accessionNumber {self.pk} is incorrect."
                 "The structure should be 'type of <character string>.")