diff --git a/lib_afc_mosaic/universe_map_file.py b/lib_afc_mosaic/universe_map_file.py
index 6373bd0..eacc3d1 100644
--- a/lib_afc_mosaic/universe_map_file.py
+++ b/lib_afc_mosaic/universe_map_file.py
@@ -7,6 +7,7 @@ import os
 import logging
 import uuid
 import time
+import codecs
 
 import phonenumbers
 
@@ -189,6 +190,14 @@ class AFCMUniverseMapFile:
         generate_mapped_file Generate the mapped file details
         """
 
+        try:
+            errors_filename_s3_key = "errors.json"
+            file_data_stream = self.optout_s3_connection.get_object(self.optout_s3_bucket,
+                                                                      errors_filename_s3_key)
+            self.error_numbers = json.load(codecs.getreader("utf-8")(file_data_stream))
+        except Exception as ex:
+            raise Exception(f"universe_map_file.generate_mapped_file: Failed to get {self.optout_s3_bucket}/{errors_filename_s3_key}: {ex}") from ex
+
         # Loop the files from the map
         for ufilename in self.mosaic_file_list:
             self.process_file(ufilename)