Apply a vendor credit to a vendor bill

Applies an open vendor credit to a single vendor bill, reducing the outstanding AP balance. The applied amount is clamped to min(amount, vendor_credit.remaining_amount). Effects:

• Inserts a vendor_credit_applications row (per-bill audit trail).
• Updates vendor_credits.remaining_amount and status (applied / partially_applied).
• Reduces vendor_bills.balance_due via the canonical SSOT writer (updateAPBalance).
• Emits activity_log row (credit_applied) + vendor_credit.applied broadcast.
• GL: at apply time, NO new journal entry is posted; the AP-reducing JE was already posted at credit issuance. The vendor_credit_applications row links back to the issuance JE (NetSuite / QuickBooks / Acumatica parity: Apply Vendor Credit posts no duplicate GL).

Requires purchasing:write scope + per-user accounting.post permission (SoD; the same gate the native AP UI uses).

Idempotency: send Idempotency-Key header to make retries safe; replays return the original result without re-applying.

POST /vendor-credits/{id}/apply

Apply a vendor credit to a vendor bill

cURL

curl --request POST \
  --url https://api.arcuserp.com/v1/vendor-credits/{id}/apply \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "vendor_bill_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "amount": 123
}
'

import requests

url = "https://api.arcuserp.com/v1/vendor-credits/{id}/apply"

payload = {
    "vendor_bill_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "amount": 123
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({vendor_bill_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a', amount: 123})
};

fetch('https://api.arcuserp.com/v1/vendor-credits/{id}/apply', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.arcuserp.com/v1/vendor-credits/{id}/apply",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'vendor_bill_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'amount' => 123
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.arcuserp.com/v1/vendor-credits/{id}/apply"

	payload := strings.NewReader("{\n  \"vendor_bill_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"amount\": 123\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.arcuserp.com/v1/vendor-credits/{id}/apply")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"vendor_bill_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"amount\": 123\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.arcuserp.com/v1/vendor-credits/{id}/apply")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"vendor_bill_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"amount\": 123\n}"

response = http.request(request)
puts response.read_body

200

{
  "data": {
    "success": true,
    "applied_amount": 123,
    "remaining_amount": 123,
    "application_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  }
}

{
  "error": "<string>"
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123"
}

{
  "error": "not_found",
  "code": "not_found",
  "type": "not_found",
  "hint": "The requested order does not exist or does not belong to this entity.",
  "param": "expand[0]",
  "required": "accounts:read",
  "request_id": "req_abc123"
}

{
  "error": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "credit_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "reason": "<string>"
}

Authorizations

Authorization · string · header · required

API key issued per entity via Settings > Developers > API Keys. Each key carries scopes (e.g. orders:read, products:write). Bearer token format: Authorization: Bearer ark_live_ent_Test keys use ark_test_ent_. Both are issued per entity
via Settings > Developers > API Keys.

Path Parameters

id · string<uuid> · required

Body

application/json

vendor_bill_id · string<uuid> · required

Open vendor bill to apply the credit against (must belong to the same vendor as the credit).

amount · number · required

Amount to apply; clamped to credit's remaining_amount.

Response

200

application/json

Vendor credit applied successfully

data · object

Show child attributes