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Portico Developer Guide
In App or By Browser and CoF
Special Processing Rules > Credential/Card on File > In App or By Browser and CoF

The Brands expect a wallet token being put on file with a merchant to be done via a CreditAuth or CreditSale transaction including the cryptogram. Any subsequent CoF purchases would not include the cryptogram. The cryptogram should not be saved by the merchant. Standard subsequent CoF data is still required for subsequent CoF transactions using a wallet token.