Custom entity field validation using constraint
127456
How to configure programmatically a unique constraint on several fields of a custom entity?
12623
The reference to entity "foo" must end with the ';' delimiter
158874
Custom entity datetime field in calendar
108444
Correct way to validate config entities?
143447
Programmatically add a taxonomy term as entity reference in a custom entity
156673
Using entity metadata wrapper with custom entity type
41039
Validation failed for one or more entities. See 'EntityValidationErrors' property for more details
145489
How to perform entity validation on code level?
144661
Add object constraint to a number of selected objects
62676
Generic method with multiple constraints
111558
Getting all the values from a entity reference field (Drupal 8)
4843
Adding an error on a dynamic referenced field
13327
Entity Query field condition for Webform submissions
99717
Foreign key constraint on array member?
82176
Set custom HTML5 required field validation message
136576
JSON schema validation with arbitrary keys
33613
Why is this trigger finding a null value despite the field being populated?