What must be done to ensure that you can connect a custom generic (MDF) object to the employee files? There are 2 correct answers to this question.

What must be done to ensure that you can connect a custom generic (MDF) object to the employee files? There are 2 correct answers to this question.
A . Create a Valid When association for the object
B . Set the externalCode field to Read Only
C . Set the externalCode field to Data Type = User
D . Create at least one configuration Ul for the object

Answer: C, D