I'm adding second delimited text driver to our system.
First driver is working and creating users. Goal with second driver is
publish phone numbers to vault.

Phone system does not contain workforceID so I need to try find users by

I can find matching user with fullname for first time, but instead
relying fullname I would like use Id-field from phonesystem.

What kind of rule I will need to match with fullname and store id-field
value as association.

Do I need to publish/map Id-field to vault as user attribute, or can I
just store it as association value?