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BillsApply vendor memos to a bill

Apply vendor memos to a bill

POST/partners/bills/{uuid}/apply-vendor-memos

Applies one or more vendor credit memos toward an approved bill.

Target bill must be approved with amountDue > 0. Each memo id is a vendor_memo UUID from list bills with billType=vendor_memo. Memos must belong to the same vendor.

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

Path parameters

uuiduuidrequired

The target bill UUID.

Request body

memosBillsarrayrequired

Vendor memos to apply.

iduuidrequired

Vendor memo bill UUID.

amountnumberrequired

Portion of memo balance to apply. Must be > 0.

Responses

200Vendor memos applied.
400Bill not approved, insufficient memo balance, or vendor mismatch.
404Bill or vendor 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
POSThttps://api.getcount.com/partners/bills/{uuid}/apply-vendor-memos
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 = 'POST';
const signingPath = '/bills/3fa85f64-5717-4562-b3fc-2c963f66afa6/apply-vendor-memos';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "memosBills": [
    {
      "id": "e3f4a5b6-c7d8-9012-efab-345678901234",
      "amount": 100
    }
  ]
};
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/apply-vendor-memos`, {
  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": "Vendor memos applied to bill",
  "data": {
    "paidbill": {
      "id": "b2c3d4e5-f6a7-8901-bcde-f23456789012",
      "billNumber": "BILL-1042",
      "billType": "bill",
      "date": "2026-01-15",
      "dueDate": "2026-02-15",
      "currency": "USD",
      "approvalStatus": "approved",
      "status": "unpaid",
      "total": 250,
      "paidAmount": 100,
      "amountDue": 150,
      "notes": "Office supplies for Q1",
      "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": [
        {
          "id": "e3f4a5b6-c7d8-9012-efab-345678901234",
          "amount": 100
        }
      ],
      "tagUuids": [],
      "createdAt": "2026-01-15T10:30:00.000Z",
      "updatedAt": "2026-01-28T14:22:30.000Z"
    }
  }
}