diff --git a/app/models/remote_translation.rb b/app/models/remote_translation.rb
index e9ef75a1c..85fc77bdd 100644
--- a/app/models/remote_translation.rb
+++ b/app/models/remote_translation.rb
@@ -4,7 +4,8 @@ class RemoteTranslation < ApplicationRecord
   validates :remote_translatable_id, presence: true
   validates :remote_translatable_type, presence: true
   validates :locale, presence: true
-
+  validates :locale, inclusion: { in: RemoteTranslations::Microsoft::AvailableLocales.available_locales }
+  validate :already_translated_resource
   after_create :enqueue_remote_translation
 
   def enqueue_remote_translation
@@ -17,4 +18,10 @@ class RemoteTranslation < ApplicationRecord
           locale: remote_translation["locale"],
           error_message: nil).any?
   end
+
+  def already_translated_resource
+    if remote_translatable&.translations&.where(locale: locale).present?
+      errors.add(:locale, :already_translated)
+    end
+  end
 end
diff --git a/config/locales/en/activerecord.yml b/config/locales/en/activerecord.yml
index aae364b39..d30a8785b 100644
--- a/config/locales/en/activerecord.yml
+++ b/config/locales/en/activerecord.yml
@@ -548,6 +548,10 @@ en:
           attributes:
             valuation:
               cannot_comment_valuation: "You cannot comment a valuation"
+        remote_translation:
+          attributes:
+            locale:
+              already_translated: Already translated resource
       messages:
         translations_too_short: Is mandatory to provide one translation at least
         record_invalid: "Validation failed: %{errors}"
diff --git a/config/locales/es/activerecord.yml b/config/locales/es/activerecord.yml
index 5a3ed55cf..ceef5bb12 100644
--- a/config/locales/es/activerecord.yml
+++ b/config/locales/es/activerecord.yml
@@ -550,6 +550,10 @@ es:
           attributes:
             valuation:
               cannot_comment_valuation: "No puedes comentar una evaluación"
+        remote_translation:
+          attributes:
+            locale:
+              already_translated: Recurso ya traducido
       messages:
         translations_too_short: El obligatorio proporcionar una traducción como mínimo
         record_invalid: "Error de validación: %{errors}"
diff --git a/spec/features/remote_translations_spec.rb b/spec/features/remote_translations_spec.rb
index c144a406a..7f4e1bb92 100644
--- a/spec/features/remote_translations_spec.rb
+++ b/spec/features/remote_translations_spec.rb
@@ -5,7 +5,7 @@ describe "Remote Translations" do
     Setting["feature.remote_translations"] = true
     create(:proposal)
     available_locales_response = %w[de en es fr pt zh-Hans]
-    expect(RemoteTranslations::Microsoft::AvailableLocales).to receive(:available_locales).
+    expect(RemoteTranslations::Microsoft::AvailableLocales).to receive(:available_locales).at_most(2).times.
                                                             and_return(available_locales_response)
     allow(Rails.application.secrets).to receive(:microsoft_api_key).and_return("123")
   end
diff --git a/spec/models/remote_translation_spec.rb b/spec/models/remote_translation_spec.rb
index 0c6723a0e..399952939 100644
--- a/spec/models/remote_translation_spec.rb
+++ b/spec/models/remote_translation_spec.rb
@@ -27,6 +27,16 @@ describe RemoteTranslation do
     expect(remote_translation).not_to be_valid
   end
 
+  it "is not valid without an available_locales" do
+    remote_translation.locale = "unavailable_locale"
+    expect(remote_translation).not_to be_valid
+  end
+
+  it "is not valid when exists a translation for locale" do
+    remote_translation.locale = :en
+    expect(remote_translation).not_to be_valid
+  end
+
   describe "#enqueue_remote_translation", :delay_jobs do
     it "after create enqueue Delayed Job" do
       expect { remote_translation.save }.to change { Delayed::Job.count }.by(1)
diff --git a/spec/shared/features/remotely_translatable.rb b/spec/shared/features/remotely_translatable.rb
index d7acff59f..478c9a049 100644
--- a/spec/shared/features/remotely_translatable.rb
+++ b/spec/shared/features/remotely_translatable.rb
@@ -10,7 +10,7 @@ shared_examples "remotely_translatable" do |factory_name, path_name, path_argume
   before do
     Setting["feature.remote_translations"] = true
     available_locales_response = %w[de en es fr pt zh-Hans]
-    expect(RemoteTranslations::Microsoft::AvailableLocales).to receive(:available_locales).at_most(3).times.
+    expect(RemoteTranslations::Microsoft::AvailableLocales).to receive(:available_locales).at_most(4).times.
                                                             and_return(available_locales_response)
     allow(Rails.application.secrets).to receive(:microsoft_api_key).and_return("123")
   end