Void an AP payment with GL reversal

curl --request DELETE \
  --url https://api.arcuserp.com/v1/ap-payments/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason": "<string>"
}
'

import requests

url = "https://api.arcuserp.com/v1/ap-payments/{id}"

payload = { "reason": "<string>" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'DELETE',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({reason: '<string>'})
};

fetch('https://api.arcuserp.com/v1/ap-payments/{id}', 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/ap-payments/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "DELETE",
  CURLOPT_POSTFIELDS => json_encode([
    'reason' => '<string>'
  ]),
  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/ap-payments/{id}"

	payload := strings.NewReader("{\n  \"reason\": \"<string>\"\n}")

	req, _ := http.NewRequest("DELETE", 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.delete("https://api.arcuserp.com/v1/ap-payments/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reason\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.arcuserp.com/v1/ap-payments/{id}")

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

request = Net::HTTP::Delete.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reason\": \"<string>\"\n}"

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "object": "ap_payment",
  "entity_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "vendor_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "bill_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "batch_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "method": "check",
  "amount": 123,
  "currency": "USD",
  "reference": "<string>",
  "status": "pending",
  "payment_date": "2023-12-25",
  "cleared_date": "2023-12-25",
  "notes": "<string>",
  "metadata": {},
  "created_at": "2023-11-07T05:31:56Z"
}

{
  "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": "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": "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"
}

Purchasing

Void an AP payment with GL reversal

Authorization: requires purchasing:write API-key scope AND the per-user payments.refund_void permission (SoD parity sweep 2026-05-16; AICPA SoD 4-role split treats AP void as highest-trust action — manager DENIED by default). System-actor calls denied.

Voids an AP payment, reversing the disbursement GL journal entry (today-dated reversal in the current open period — closed periods are never mutated), voiding the linked check (including reversal of the check-cleared entry when the check had cleared), restoring any vendor-credit consumption to the cent, and re-opening EVERY bill the payment covered via the canonical AP balance writer. A multi-bill check payment re-opens ALL of its bills; call GET /ap/payments/:id/void-preview (internal UI endpoint) or inspect void_summary in the response to enumerate the effect. The void is reflected in the vendor’s AP aging immediately.

reason is REQUIRED (audited; 422 void_reason_required when absent). Typed rejections: 409 payment_already_voided (double-void), 409 historical_row_immutable (migrated rows), 422 ach_payment_not_voidable (ACH in flight or settled — cancel at the bank / record a vendor credit instead), 422 payment_reconciled_blocks_void (matched to a bank statement line — unmatch in reconciliation first), 409 credit_restore_conflict / 422 credit_restore_unresolvable (vendor-credit restoration cannot complete safely). Requires purchasing:write scope.

DELETE

ap-payments

{id}

Void an AP payment with GL reversal

curl --request DELETE \
  --url https://api.arcuserp.com/v1/ap-payments/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason": "<string>"
}
'

import requests

url = "https://api.arcuserp.com/v1/ap-payments/{id}"

payload = { "reason": "<string>" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'DELETE',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({reason: '<string>'})
};

fetch('https://api.arcuserp.com/v1/ap-payments/{id}', 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/ap-payments/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "DELETE",
  CURLOPT_POSTFIELDS => json_encode([
    'reason' => '<string>'
  ]),
  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/ap-payments/{id}"

	payload := strings.NewReader("{\n  \"reason\": \"<string>\"\n}")

	req, _ := http.NewRequest("DELETE", 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.delete("https://api.arcuserp.com/v1/ap-payments/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"reason\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.arcuserp.com/v1/ap-payments/{id}")

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

request = Net::HTTP::Delete.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"reason\": \"<string>\"\n}"

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "object": "ap_payment",
  "entity_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "vendor_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "bill_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "batch_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "method": "check",
  "amount": 123,
  "currency": "USD",
  "reference": "<string>",
  "status": "pending",
  "payment_date": "2023-12-25",
  "cleared_date": "2023-12-25",
  "notes": "<string>",
  "metadata": {},
  "created_at": "2023-11-07T05:31:56Z"
}

{
  "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": "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": "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"
}

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

string<uuid>

required

Body

application/json

reason

string

required

Audited void reason. Stamped into the reversal journal entries, the activity log, and the check's void_reason.

Response

Voided AP payment. Includes void_summary (reversed_journal_entry_ids, reopened_bills, restored_credits, check).

A payment Arcus made to a vendor (AP-side).

string<uuid>

object

enum<string>

Available options:

ap_payment

entity_id

string<uuid>

read-only

vendor_id

string<uuid>

bill_id

string<uuid> | null

Set when payment is applied to a single bill; null for batch/on-account.

batch_id

string<uuid> | null

method

enum<string>

Available options:

check,

ach,

wire,

credit_card,

cash,

other

amount

number

currency

string

default:USD

reference

string | null

Check number, ACH trace, etc.

status

enum<string>

read-only

Available options:

pending,

sent,

cleared,

voided,

returned

payment_date

string<date>

cleared_date

string<date> | null

notes

string | null

metadata

object | null

created_at

string<date-time>

read-only

Overview

All Endpoints

Void an AP payment with GL reversal

Authorizations

Path Parameters

Body

Response