What must be done to ensure that you can use a custom generic (MDF) object for Employee Self-Service? Note: There are 2 correct answers to this question.

What must be done to ensure that you can use a custom generic (MDF) object for Employee Self-Service? Note: There are 2 correct answers to this question.
A . Set the externalName field to Data Type = User.
B . Create a Valid When association for the object.
C . Create one configuration UI for the object.
D . Set the externalCode field to Data Type = User.

Answer: B C