orderInformation. billTo.lastName {#order-info-bill-to-last-name}
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The last name of the person requesting the product.  
This person may or may not be the cardholder.

> IMPORTANT  
> This field is optional if your account is configured for relaxed requirements for address data.

`American Express Direct`
:
Combined, this field and should not exceed 40 characters.

Specifications {#order-info-bill-to-last-name_Specifications}
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* **Data Type:** String
* **Data Length:** 60
* **Data Length:**
  * **`Worldpay VAP`:** 25
  * **All other processors:** 60

Mapping Information {#order-info-bill-to-last-name_Mapping}
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* **REST API Field:** orderInformation.billTo.lastName
* **SCMP API Field:** customer_lastname
* **Simple Order API Field:** billTo_lastName

Processor Field Names
---------------------

This list provides the Level II/Level III processor field name for each processor that supports Level II or Level III data.

* **`American Express Direct`:** Does not apply