diff --git a/app/models/testrun_message.rb b/app/models/testrun_message.rb
index 5b2e163a..a6d708a5 100644
--- a/app/models/testrun_message.rb
+++ b/app/models/testrun_message.rb
@@ -56,7 +56,7 @@ class TestrunMessage < ApplicationRecord
     filtered_messages = filter_messages_by_size testrun, messages
 
     # An array with hashes is passed, all are stored
-    TestrunMessage.create!(filtered_messages)
+    validate_and_store!(filtered_messages)
   end
 
   def self.filter_messages_by_size(testrun, messages)
@@ -83,6 +83,20 @@ class TestrunMessage < ApplicationRecord
     end
     filtered_messages.select(&:present?)
   end
+  private_class_method :filter_messages_by_size
+
+  def self.validate_and_store!(messages)
+    validated_messages = messages.map do |message|
+      testrun_message = TestrunMessage.new(message)
+      testrun_message.validate!
+      # We serialize the message without the ID, created_at and updated_at, as they are generated by the database.
+      testrun_message.serializable_hash(except: %w[id created_at updated_at])
+    end
+
+    # Now, we store all messages and skip validations (they are already done)
+    TestrunMessage.insert_all!(validated_messages) # rubocop:disable Rails/SkipsModelValidations
+  end
+  private_class_method :validate_and_store!
 
   def either_data_or_log
     if [data, log].count(&:present?) > 1