Simple Order API Field Reference {#api-fields}
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26.04.03
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![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/update-15x75.svg/jcr:content/renditions/original) April 2026: This revision of the guide contains updated or new field information.  
![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/new-15x75.svg/jcr:content/renditions/original) Added these fields:

* installment_alertPreference
* installment_preferredDay  
  ![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/update-15x75.svg/jcr:content/renditions/original) Updated this field:

26.04.02
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![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/update-15x75.svg/jcr:content/renditions/original) April 2026: This revision of the guide contains updated or new field information.  
![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/new-15x75.svg/jcr:content/renditions/original) Added these fields:

* airlineData_invoiceDate
* ccAuthReply_enhancedDataEnabled
* ccCaptureReply_enhancedDataEnabled

26.04.01
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![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/update-15x75.svg/jcr:content/renditions/original) April 2026: This revision of the guide contains updated or new field information.  
![](/content/dam/documentation/cybs/en-us/topics/reference/notes/doc-relnotes/images/update-15x75.svg/jcr:content/renditions/original) Updated these fields:

* healthCare#_amount
* healthCare#_amountType
* invoiceHeader_merchantDescriptorContact
* invoiceHeader_merchantDescriptorCustomerServicePhoneNumber
* payerAuthEnrollService_merchantName
* subsequentAuthTransactionID