PendingReceiptsSummary

Summary of pending-receipt invoicing attempts triggered by a client update.

{
    "attempted": 3,
    "succeeded": 2,
    "failed": 1,
    "skipped": 0,
    "failures": [
        {
            "receipt_id": "receipt_1234567890",
            "error": "Failed to process receipt: 400 Bad Request"
        }
    ]
}