Thanks for the doc link, but unfortunately I've read through it previously and wasn't much help in explaining why these two lead object fields are missing from the link field list for the "lead" link type. Both fields are string types, and both a part of the lead object, but doesn't show up in the drop down menu when trying to select a Link field. Is my understanding incorrect and that first/last name are no considered a part of " any custom fields in the list." mentioned in the documentation? RE: linking to unique ids and fields. I agree is the better route, unfortunately it's not quite a option for us in this case. Our data lives separately (and in this case, incomplete) we were hoping to use Marketo to join our two data sources together while relying on less than ideal join criteria. Our custom object would be keyed off of first and last name combined. We're looking to supplement our contact records with the additional meta data in this new custom object, which is unique per first/last name. Joining that to our contacts is a many-to-one relationship unfortunately due to legacy dupes. But I can't seem to even get started without being able to link the custom object on first/last name.
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