> ## Documentation Index
> Fetch the complete documentation index at: https://docs.slm.m1amdocs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ExternalBilling Subobject

List details for an ExternalBilling payment method.

| Data Member | Data Type | Description |
| - | - | - |
| `BillReceiver` | Enum | The payment provider. In this case the payment provider is one of the Amdocs Billing systems.—CES, Ensemble, or Optima. Currently CES is the only billing system implemented in the integration. |
| `PaymentChannelId` | String | The customer `paymentChannelId` in the billing system. Best practice recommends that this is the same as the `merchantPaymentMethodId` in the PaymentMethod Object. (See [PaymentMethod Data Members](PaymentMethod_Data_Membe)). |
| `FinancialAccountId` | String | The customer financial account ID in the billing system. |
| **Parent topic:**[PaymentMethod Subobjects](../topics/PaymentMethod_Subobjects) | | |


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.