Required Fields for Updating a Fixed-Price Link {#paybylink-update-req-fields}
==============================================================================

[orderInformation.amountDetails.currency](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-amount-details-currency.md "")
:

[orderInformation.amountDetails.totalAmount](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-amount-details-total-amount.md "")
:

[orderInformation.lineItems\[\].productName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-product-name.md "")
:

[orderInformation.lineItems\[\].unitPrice](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-unit-price.md "")
:

processingInformation.linkType
:
Set to `PURCHASE`.