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Required Fields for a Tax Refund Calculation Using the REST API {#tax-calc-refund-required-fields}
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Use these fields to perform a tax refund calculation.

clientReferenceInformation.code
:

invoiceDetails.invoiceDate
:
Set this field to original transaction date.

orderInformation.lineItems\[\].unitPrice
:

orderInformation.billTo.country
:

orderInformation.billTo.postalCode
:

orderInformation.billTo.locality
:

orderInformation.billTo.administrativeArea
:

taxInformation.refundIndicator
:
Set the value of this field to `true`.

taxInformation.showTaxPerLineItem
:

taxInformation.nexus
:
If you include this field, do not include the taxInformation.noNexus field.

taxInformation.noNexus
:
If you include this field, do not include the taxInformation.nexus field.  
RELATED TO THIS PAGE

* [API Field Reference for the REST API](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/api-fields/topics/rest-api-fields-intro.dita)