Request message for fetching the invoices of a given billing setup that were issued during a given month.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/services/invoice_service.proto)

| Fields ||
|---|---|
| ## `billing_setup` | `string` Required. The billing setup resource name of the requested invoices. `customers/{customer_id}/billingSetups/{billing_setup_id}` |
| ## `customer_id` | `string` Required. The ID of the customer to fetch invoices for. |
| ## `include_granular_level_invoice_details` | `bool` Optional. When true, the response will include more granular level invoice details such as campaign level cost breakdown, itemized regulatory costs and adjustments. The default value is false. |
| ## `issue_month` | `https://developers.google.com/google-ads/api/reference/rpc/v23/MonthOfYearEnum.MonthOfYear` Required. The issue month to retrieve invoices. |
| ## `issue_year` | `string` Required. The issue year to retrieve invoices, in yyyy format. Only invoices issued in 2019 or later can be retrieved. |