COUNTCOUNT
Sign Up
Credit MemosUpdate a credit memo

Update a credit memo

PATCH/partners/invoices/{uuid}

Updates a credit memo. Edits to non-draft memos are field-specific and may be rejected.

HMAC signature + Bearer access token
Try this request
Invoices API

Path parameters

uuiduuidrequired

The credit memo UUID to update.

Request body

datedate

Updated memo date.

notesstring

Updated notes.

productsarray

Replacement line items (draft memos only).

Responses

200Credit memo updated.
400Change not allowed on approved memo.
404Credit memo not found.
401Missing or invalid HMAC signature, expired timestamp, or invalid Bearer token. Troubleshoot
403The credential does not have access to this workspace or resource. Troubleshoot
429Rate limit exceeded (100 requests per minute per clientId). Retry after the Retry-After header. Troubleshoot
PATCHhttps://api.getcount.com/partners/invoices/{uuid}
Request
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';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "notes": "Adjusted credit reason"
};
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`, {
  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
{
  "status": "success",
  "data": {
    "invoice": {
      "id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "invoiceNumber": "CM-0042",
      "invoiceType": "memo",
      "customerUuid": "dfa3219e-6af8-4c53-997a-037534f63a35",
      "appliedToInvoiceUuid": "f6a7b8c9-d0e1-2345-fabc-456789012345",
      "date": "2026-03-01",
      "dueDate": null,
      "currency": "USD",
      "status": "approved",
      "isDraft": false,
      "approved": true,
      "isSent": false,
      "paymentStatus": "unpaid",
      "subtotal": 500,
      "taxTotal": 0,
      "total": 500,
      "amountDue": 500,
      "products": [
        {
          "productUuid": "aa11bb22-cc33-dd44-ee55-ff6677889900",
          "description": "Credit for overbilling on prior invoice",
          "quantity": 1,
          "unitPrice": 500,
          "nonTaxable": true
        }
      ],
      "createdAt": "2026-03-01T09:00:00.000Z",
      "updatedAt": "2026-03-02T11:15:00.000Z",
      "notes": "Adjusted credit reason"
    }
  }
}