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BillsUpdate a bill

Update a bill

PATCH/partners/bills/{uuid}

Updates a bill. Only the fields you send are changed.

Same UUID field names as create. Providing lineItems replaces all lines. Approved or paid bills restrict which fields can change.

HMAC signature + Bearer access token
Try this request
Transactions APIVendors APIChart of Accounts API

Path parameters

uuiduuidrequired

The bill UUID to update.

Request body

vendorUuiduuid

Updated vendor UUID.

datedate

Updated bill date.

dueDatedate

Updated due date.

billNumberstring

Updated bill number.

purchaseOrderNumberstring

Updated PO number.

notesstring

Updated notes.

currencystring

Updated currency code.

lineItemsarray

Replacement line items (same shape as create).

tagUuidsarray

Replacement tag UUID list.

projectUuiduuid

Updated project UUID.

Responses

200Bill updated successfully.
400Change not allowed on approved or paid bill.
404Bill 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/bills/{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 = '/bills/3fa85f64-5717-4562-b3fc-2c963f66afa6';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "dueDate": "2026-03-01",
  "notes": "Extended payment terms"
};
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/bills/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",
  "message": "Bill updated successfully",
  "data": {
    "id": "b2c3d4e5-f6a7-8901-bcde-f23456789012",
    "billNumber": "BILL-1042",
    "billType": "bill",
    "date": "2026-01-15",
    "dueDate": "2026-03-01",
    "currency": "USD",
    "approvalStatus": "approved",
    "status": "unpaid",
    "total": 250,
    "paidAmount": 0,
    "amountDue": 250,
    "notes": "Extended payment terms",
    "purchaseOrderNumber": null,
    "isDeleted": false,
    "vendor": {
      "id": "f1a2b3c4-d5e6-7890-abcd-ef1234567890",
      "name": "Office Depot",
      "email": "ap@officedepot.example"
    },
    "lineItems": [
      {
        "id": "a4b5c6d7-e8f9-0123-abcd-456789012345",
        "description": "Office supplies",
        "quantity": 1,
        "price": 250,
        "total": 250,
        "categoryAccountUuid": "c3d4e5f6-a7b8-9012-cdef-123456789012"
      }
    ],
    "transactions": [],
    "appliedVendorMemos": [],
    "tagUuids": [],
    "createdAt": "2026-01-15T10:30:00.000Z",
    "updatedAt": "2026-01-28T14:22:30.000Z"
  }
}