In implementing Card On File
https://docs.clover.com/docs/ecommerce-saving-card#what-is-card-on-file-cof
"Save a new card for an existing customer" requires that the existing card be revoked using
'https://scl-sandbox.dev.clover.com/v1/customers/{customerId}/sources/{cardId}'
What "cardId" do I use?
I created the customer with the https://scl-sandbox.dev.clover.com/v1/customers endpoint passing in the card token so the only thing I have is the customerid