Authorization Service {#samsungpay-auth-intro}
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You can authorize a payment for Samsung Pay using two different types of decryption methods: `Cybersource` or Merchant. Each decryption method requires a different set of required API fields. In addition, depending on which card type is used, different fields are required for requesting the authorization service.

|     Payment Processor     |                                                                                                                                                           Authorization and Capture Information                                                                                                                                                            |
|---------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `American Express Direct` | For USD, `American Express Direct` limits authorization and capture amounts to 9,999,999.00. For other currencies, the maximum amount depends on the currency. Contact American Express for the maximum amounts for the currencies that you are using. Regardless of exponent or currency, the maximum number of digits for the amount value is 12 digits. |
[Processor-Specific Information About Authorizations and Captures]