Issue #3254347: Add the process plugin ID and index to migration exception message

core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldTest.php

@@ -207,7 +207,7 @@ public function testDatetimeFields() {
     $migration = $this->getMigration('d7_field');
     $messages = iterator_to_array($migration->getIdMap()->getMessages());
     $this->assertCount(5, $messages);
-    $msg = "d7_field:type: Can't migrate field 'field_event' with 'todate' settings. Enable the datetime_range module. See https://www.drupal.org/docs/8/upgrade/known-issues-when-upgrading-from-drupal-6-or-7-to-drupal-8#datetime";
+    $msg = "d7_field:type:process_field: Can't migrate field 'field_event' with 'todate' settings. Enable the datetime_range module. See https://www.drupal.org/docs/8/upgrade/known-issues-when-upgrading-from-drupal-6-or-7-to-drupal-8#datetime";
     $this->assertSame($messages[4]->message, $msg);
   }