Associate a card to a buyer

It is possible to bind a vaulted card to a buyer when it is being created. There are a few ways to do so.

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Associate by buyer_id

The easiest way to associate a buyer with a card is to pass along a buyer_id when creating a card.

This will find a buyer with that id and associate the card with it. If a buyer with this id could not be found it’s ignored.

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Associate by buyer_external_identifier

Alternatively, a card can be associated with a buyer by its external_identifier. If a buyer with that external_identifier could not be found it’s ignored.