diff -u b/core/modules/migrate/src/Plugin/MigrateIdMapInterface.php b/core/modules/migrate/src/Plugin/MigrateIdMapInterface.php
--- b/core/modules/migrate/src/Plugin/MigrateIdMapInterface.php
+++ b/core/modules/migrate/src/Plugin/MigrateIdMapInterface.php
@@ -271,7 +271,7 @@
    * Sets the migrate message service.
    *
    * @param \Drupal\migrate\MigrateMessageInterface $message
-   *   The message to display.
+   *   The migrate message service.
    */
   public function setMessage(MigrateMessageInterface $message);
 
diff -u b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
--- b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
@@ -3,6 +3,7 @@
 namespace Drupal\migrate\Plugin\migrate\process;
 
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\MigrateSkipProcessException;
 use Drupal\migrate\Plugin\MigratePluginManagerInterface;
 use Drupal\migrate\Plugin\MigrationPluginManagerInterface;
@@ -10,7 +11,6 @@
 use Drupal\migrate\ProcessPluginBase;
 use Drupal\migrate\Plugin\MigrationInterface;
 use Drupal\migrate\MigrateExecutableInterface;
-use Drupal\migrate\MigrateMessage;
 use Drupal\migrate\Row;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
only in patch2:
unchanged:
--- a/core/modules/migrate/tests/src/Unit/process/MigrationLookupTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/MigrationLookupTest.php
@@ -62,6 +62,7 @@ public function testTransformWithStubbing() {
     $destination_migration->getIdMap()->willReturn($destination_id_map->reveal());
     $migration_plugin_manager->createInstances(['destination_migration'])
       ->willReturn(['destination_migration' => $destination_migration->reveal()]);
+    $destination_id_map->setMessage(Argument::any())->willReturn(NULL);
     $destination_id_map->lookupDestinationId([1])->willReturn(NULL);
     $destination_id_map->saveIdMapping(Argument::any(), Argument::any(), MigrateIdMapInterface::STATUS_NEEDS_UPDATE)->willReturn(NULL);
 
only in patch2:
unchanged:
--- a/core/modules/migrate/tests/src/Unit/process/MigrationTest.php
+++ b/core/modules/migrate/tests/src/Unit/process/MigrationTest.php
@@ -108,6 +108,7 @@ public function testTransformWithStubbing() {
    */
   protected function getMigration() {
     $id_map = $this->prophesize(MigrateIdMapInterface::class);
+    $id_map->setMessage(Argument::any())->willReturn(NULL);
     $id_map->lookupDestinationId([1])->willReturn(NULL);
     $id_map->saveIdMapping(Argument::any(), Argument::any(), MigrateIdMapInterface::STATUS_NEEDS_UPDATE)->willReturn(NULL);