How to set default value for manytoone field?

How to set default value for manytoone field?
OnNew can be;
But I want to implemet in domain xml

I nedd help!!!

Hello,

You can’t set a default value for a M2O field in the domain definition. You have to call an action-record from the onNew event.

What is your case that requires setting a default value in the domain definition?

Regards

Because I want to add two m2o fields and set default value for all domain in my project。
In order to abstract,I create a domain and all children domain extends that.
Otherwise, I have to call an action-record in many views xml