Entity Reference validation

It automatically creates new entity if it doesn't exist

ah. I havent realized that. It is possible to prevent it anyhow ?
I dont want to allow users to create a mess, so only allowed values should be possible to add..

You can create your custom widget your_module/src/Plugin/Data Field/FieldWidget and do whatever you want

add option auto create entity in widget

Automatically closed - issue fixed for 2 weeks with no activity.