APEX 5: Page item (Select List) with LOV must have values from a another table which return PK (FK of current table) I have a page form where the user can make a new account. Every user has a type. The user must choose which type of user it is.
I have two tables (Users and UserTypes). What I want to do is user must choose the type from a select list which contains UserTypes.usertype in a table which has UserType_id a PK and FK in USERS. 

How to make every value of that select list represent it's PK? Thanks.
You have to change your Select List type. Choose SQL query in List of Values section, as a source of a list write following:

select usertype, usertype_id from usertypes