Custom field ID.
Custom field title.
Custom field key.
Privacy level of the custom field.
Type of information to provide for members.
Social network type.
Field origin.
Which members will have the custom field in their profile.
A section which the field belongs to.
Date and time when the field was created.
Date and time when the field was updated.
Revision number, which increments by 1 each time the custom field is updated. To prevent conflicting changes, the existing revision must be used when updating a custom field.