paymentInfomation. eWallet.fundingSource {#payment-info-ewallet-fund-source}
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The source of the eWallet funds.  
Possible values:

* `BankTransfer`
* `CreditCard`
* `KakaoMoney`
* `MobileTransfer`
* `NaverPayPoint`

{#payment-info-ewallet-fund-source_ul_td5_pfw_ngc}  
This field is supported only for transactions with `Korean Cyber Payments`.

Specifications {#payment-info-ewallet-fund-source_Specifications}
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* **Data Type:** String
* **Data Length:** 30

Mapping Information {#payment-info-ewallet-fund-source_Mapping}
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* **REST API Field:** paymentInfomation.eWallet.fundingSource
* **Simple Order API Field:** No corresponding field.