Required Fields for Authorizing a Payment Using Mastercard and the Merchant Decryption Method {#samsungpay-auth-merdecypt-mc-mandatory}
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The following fields are required when submitting an authorization request using the Merchant decryption method:

* paymentInformation.card.number-set this field to the payment network token value.
* paymentInformation.card.expirationMonth/ paymentInformation.tokenizedCard.expirationMonth-set this field to the payment network token expiration month value.
* paymentInformation.card.expirationYear/ paymentInformation.tokenizedCard.expirationYear-set this field to the payment network token expiration year value.
* processingInformation.commerceIndicator- set this field to `spa`.
* paymentinformation.tokenizedCard.cryptogram-set this field to the network token cryptogram.
* paymentInformation.tokenizedCard.transactionType-set this field to `1`.
* processingInformation.paymentSolution-set this field to `008`.
* consumerAuthenticationInformation.ucafAuthenticationData--set this field to the 3-D Secure cryptogram of the payment network token.
* consumerAuthenticationInformation.ucafCollectionIndicator-set this field to `2`.

Related Information {#samsungpay-auth-merdecypt-mc-mandatory_section_abb_khn_b1c}
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[REST API Field Reference Guide](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/rest-api-fields-intro.md "")