# Get Invoice Details

Retrieve invoice details for a transaction. Invoices are produced on the nightly billing cycle, so an invoice may not be available immediately after a payment.

Endpoint: GET /external/invoices/details
Version: 1.0.0
Security: bearerAuth, appId

## Query parameters:

  - `confirmationsId` (string, required)
    Transaction identifier returned by the payment request. Note the plural spelling — the invoice endpoints use `confirmationsId` while `/external/paymentConfirmation` uses `confirmationId`. Both accept the same identifier.

## Response 401 fields (application/json):

  - `errors` (array)
    Error messages.

## Response 404 fields (application/json):

  - `errors` (array)
    Error messages.