---
title: "Add payment transactions · Invoices · COUNT Partner API"
description: "Settles whole transactions against an invoice, or records a refund paid out on a credit memo. PATCH /partners/invoices/{uuid}/add-transactions"
canonical: "https://developers.getcount.com/reference/invoices/add-invoice-transactions"
source: "https://developers.getcount.com/reference/invoices/add-invoice-transactions"
---
[Invoices](https://developers.getcount.com/reference/invoices) / Add payment transactions

# Add payment transactions

PATCH `/partners/invoices/{uuid}/add-transactions`

Settles whole transactions against an invoice, or records a refund paid out on a credit memo.

Each transaction settles its full amount. On an invoice, Income transactions are payments and Expense transactions are refunds; on a credit memo, Expense transactions record a refund paid to the customer — the only way to refund a credit memo. The document must be approved (not a draft or estimate), have a customer, and be in the workspace currency; pay a foreign-currency invoice with POST /partners/transactions/{transactionId}/assign-to-bills-invoices instead. Transactions must not be reviewed, reconciled, pending, excluded, or already part of another invoice. Undo with PATCH /{uuid}/remove-transaction. MCP equivalent for credit memo refunds: COUNT_record_credit_memo_refund.

HMAC signature + Bearer access token

[Try this request](https://developers.getcount.com/tools/try-it?method=PATCH&path=%2Fpartners%2Finvoices%2F%7Buuid%7D%2Fadd-transactions&body=%7B%0A++%22transactions%22%3A+%5B%0A++++%22b7c8d9e0-f1a2-3456-bcde-678901234567%22%0A++%5D%0A%7D)

[Credit Memos API](https://developers.getcount.com/reference/credit-memo) [Customers API](https://developers.getcount.com/reference/customers) [Products & Services API](https://developers.getcount.com/reference/products-and-services) [Transactions API](https://developers.getcount.com/reference/transactions)

#### Path parameters

`uuid` uuid required

The UUID of the invoice or credit memo.

#### Request body

`transactions` array required

Transaction UUIDs from the Transactions API.

`isRecordAsCash` boolean

Record the payment as a hand-recorded cash receipt. Defaults to false.

`cashDepositPending` boolean

Invoices only, and only with isRecordAsCash: true. Routes the receipt through Undeposited Funds so the invoice reads `paid, awaiting deposit` until the bank deposit is matched.

#### Responses

`200` Transactions added.

`400` No transactions sent; the document is a draft or estimate, has no customer, is in a foreign currency, or is already fully paid; a transaction is reviewed, reconciled, pending, excluded, or already on another invoice; or the amount exceeds the unpaid balance or the invoice total for refunds.

`404` Invoice not found, or no transaction of the accepted type found.

`401` Missing or invalid HMAC signature, expired timestamp, or invalid Bearer token. [Troubleshoot](https://developers.getcount.com/getting-started/errors#error-401)

`403` The credential does not have access to this workspace or resource. [Troubleshoot](https://developers.getcount.com/getting-started/errors#error-403)

`429` Rate limit exceeded (100 requests per minute per clientId). Retry after the Retry-After header. [Troubleshoot](https://developers.getcount.com/getting-started/errors#error-429)

[Previous PATCH Remove credit](https://developers.getcount.com/reference/invoices/remove-invoice-credit) [Next PATCH Remove transaction](https://developers.getcount.com/reference/invoices/remove-invoice-transaction)

PATCH `https://api.getcount.com/partners/invoices/{uuid}/add-transactions`

Request

```javascript
import crypto from 'node:crypto';

const BASE_URL = 'https://api.getcount.com';
const CLIENT_ID = process.env.COUNT_CLIENT_ID;
const CLIENT_SECRET = process.env.COUNT_CLIENT_SECRET;
const ACCESS_TOKEN = process.env.COUNT_ACCESS_TOKEN;

const method = 'PATCH';
const signingPath = '/invoices/3fa85f64-5717-4562-b3fc-2c963f66afa6/add-transactions';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "transactions": [
    "b7c8d9e0-f1a2-3456-bcde-678901234567"
  ]
};
const bodyString = JSON.stringify(body);

const bodyHash = crypto.createHash('sha256').update(bodyString).digest('hex');
const baseString = `${method}:${signingPath}:${timestamp}:${bodyHash}`;
const signature = crypto.createHmac('sha256', CLIENT_SECRET).update(baseString).digest('hex');

const response = await fetch(`${BASE_URL}/partners/invoices/3fa85f64-5717-4562-b3fc-2c963f66afa6/add-transactions`, {
  method,
  headers: {
    'x-client-id': CLIENT_ID,
    'x-timestamp': timestamp,
    'x-signature': signature,
    'Content-Type': 'application/json',
    Authorization: `Bearer ${ACCESS_TOKEN}`,
  },
  body: bodyString,
});

console.log(await response.json());
```

Response · 200

```json
{
  "status": "success",
  "message": "success on adding transactions to your invocie.",
  "data": {
    "paidInvoice": {
      "id": "f6a7b8c9-d0e1-2345-fabc-456789012345",
      "invoiceNumber": "INV-1042",
      "invoiceType": "invoice",
      "customerUuid": "dfa3219e-6af8-4c53-997a-037534f63a35",
      "date": "2026-03-01",
      "dueDate": "2026-03-31",
      "currency": "USD",
      "status": "sent",
      "isDraft": false,
      "approved": true,
      "isSent": true,
      "paymentStatus": "paid",
      "subtotal": 1000,
      "taxTotal": 85,
      "total": 1085,
      "amountDue": 0,
      "products": [
        {
          "productUuid": "aa11bb22-cc33-dd44-ee55-ff6677889900",
          "description": "Consulting services",
          "quantity": 10,
          "unitPrice": 100,
          "nonTaxable": false
        }
      ],
      "createdAt": "2026-03-01T09:00:00.000Z",
      "updatedAt": "2026-03-02T11:15:00.000Z"
    }
  }
}
```