Introduction to update API for Drupal 8
Introduction to update API for Drupal 8.
Updating Configuration
If your module is making a data model change related to configuration, then you need to properly update your data model. The three steps are
Updating Database Schema and/or Data in Drupal 9
How to update your data model if making changes to the database schema.
Updating Entities and Fields in Drupal 8
How to write update functions handling field/entity type definition changes affecting schema
Writing Automated Update Tests for Drupal 8 (or later)
If your module is making a data model change related to configuration, then you need to properly update your data model (as described on