Issue #3178619 by bojan_dev: Unable to map multiple countries to the same language

src/Form/SmartIpLanguageMappingForm.php

@@ -59,9 +59,6 @@ class SmartIpLanguageMappingForm extends EntityForm {
       if ($db_entity->getCountry() === $entity->getCountry()) {
         $form_state->setErrorByName('country', $this->t('The country code %country_code already exists and must be unique.', ['%country_code' => $entity->getCountry()]));
       }
-      elseif ($db_entity->getLanguage() === $entity->getLanguage()) {
-        $form_state->setErrorByName('language', $this->t('The language code %langcode already exists and must be unique.', ['%langcode' => $entity->getLanguage()]));
-      }
     }
   }