Credit Card Processing Error

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​Payment Processor: Cayan
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The error occurs in the POS when processing a transaction with an existing credit card on file. The error happens because the credit card token on file is no longer valid because Cayan credentials for the account have been updated or changed in the Customer Payment section in the Settings tab.
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Credit card tokens on file cannot be transferred or used with different credentials. The last 4 digits of the credit card does show, but the token on file cannot access the credentials.
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When processing a credit card, you will need to click on the

"Process with New Credit Card" button and re-tokenize the customer credit cards.