Country-Specific Required Fields for Processing a Basic Authorization {#payments-processing-basic-auth-required-country}
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Use these country-specific required fields to process a basic authorization.

Argentina
---------

[merchantInformation.taxId](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-tax-id.md "")
:
Required for Mastercard transactions.
{#payments-processing-basic-auth-required-country_taxID}

[merchantInformation.transactionLocalDateTime](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-transaction-local-date-time.md "")
:
Required in Argentina when the time zone is not included in your account. Otherwise, this field is optional.

Brazil
------

[paymentInformation.card.sourceAccountType](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-source-acct-type-a.md "")
:
Required for combo card transactions.

[paymentInformation.card.sourceAccountTypeDetails](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-source-acct-type-details.md "")
:
Required for combo card line-of-credit and prepaid-card transactions.

Chile
-----

[merchantInformation.taxId](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-tax-id.md "")
:
Required for Mastercard transactions.

Egypt
-----

[paymentInformation.card.cardType](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-card-type.md "")
:
Required for Meeza transactions. Set the value to `067`.

[merchantInformation.merchantDescriptor.country](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-merchant-descriptor-country-a.md "")
:
Required for Meeza transactions. Set the value to `EG`.

Paraguay
--------

[merchantInformation.taxId](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-tax-id.md "")
:
Required for Mastercard transactions.

Saudi Arabia
------------

[processingInformation.authorizationOptions.transactionMode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/processing-info-aa/processing-info-auth-ops-transaction-mode.md "")
:
Required only for merchants in Saudi Arabia.

Taiwan
------

[paymentInformation.card.hashedNumber](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-hashed-num.md "")
:
Required only for merchants in Taiwan.