By faline on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
11.2.x
Introduced in version: 
11.2.0
Issue links: 
https://www.drupal.org/node/2625212
Description: 

This change adds \Drupal\Core\Config\DevelopmentLenientConfigSchemaChecker and the config.schema_checker service to validate config schema on save. Only enabled in development.services.yml by default to help identify issues while developing.

Impacts: 
Module developers