Cancel a purchase order before any goods arrive

DELETE /pos/{poId}

The order stays on the books as cancelled (its reference remains taken); an authorised order's incoming expectations are withdrawn from inventory first (inventory.incoming-cancelled per line, keyed <poId>:<sku>:cancel; 502 InventoryUnavailable while inventory is away, the cancel finishing later). 409 PoHasReceipts once anything was received — short-close it instead. Appends purchasing.po-cancelled. Idempotent: a retry against an already-cancelled order is acknowledged and appends nothing.

Access

Requires purchasing:write.

How scopes come from roles: Scopes and roles. Getting a token: Authentication and app tokens.

Retries

Idempotent: a retry against an already-cancelled order is acknowledged and appends nothing.

A retry with the same key answers 200, with what the first call recorded.

Why every write carries a key: Idempotency and retries.

Facts appended

purchasing.po-cancelled

What a fact is: Facts and the journal.

AI agent tool

Agents call this as purchasing_cancel_po (Purchasing: Cancel PO), in the purchasing toolset. It is marked destructive, so the agent asks before running it.

Connecting an agent: AI agents.

Example

curl

curl -X DELETE 'https://purchasing.getmanifold.io/pos/po_01a1340f-9980-7c41-9d37-d97a5cec069b' \
  -H "Authorization: Bearer $MANIFOLD_TOKEN"

JavaScript (fetch)

const response = await fetch("https://purchasing.getmanifold.io/pos/po_01a1340f-9980-7c41-9d37-d97a5cec069b", {
  method: "DELETE",
  headers: { Authorization: `Bearer ${process.env.MANIFOLD_TOKEN}` },
});
if (!response.ok) throw new Error(`${response.status}: ${await response.text()}`);
const answer = await response.json();

Response · 200 · application/json

{
  "id": "po_01a1340f-9980-7c41-9d37-d97a5cec069b",
  "number": "PO-00002",
  "serial": 2,
  "reference": "NW-REORDER-RED",
  "supplier": "Northwind Components",
  "supplierId": "cmp_01a15884-6399-7e5f-8a6b-1c2d3e4f5a6b",
  "currency": "AUD",
  "status": "cancelled",
  "lines": [
    {
      "sku": "WIDGET-RED",
      "ordered": 30,
      "received": 0,
      "cancelled": 0,
      "unitCostCents": 1180
    },
    {
      "sku": "WIDGET-BLUE",
      "ordered": 10,
      "received": 0,
      "cancelled": 0,
      "unitCostCents": 1250
    }
  ],
  "landedCosts": [],
  "payables": [],
  "payments": [],
  "revision": 0,
  "createdAt": "2026-10-06T23:40:00.000Z",
  "updatedAt": "2026-10-08T02:30:00.000Z"
}

The panel writes this call in other languages. It does not send it: Manifold's APIs do not take calls from a web page on another site, so run the call from your own code or terminal. The whole API as OpenAPI: purchasing-manager.openapi.json. Base URL https://purchasing.getmanifold.io.

Errors

Every refusal is a status and a JSON body whose _tag names it. A refused call changes nothing.

`401`

Refusal	What it means	What to do
`Unauthorized` reason	The token is missing, expired or not one Manifold issued.	Get a fresh token and send the call again.
`TokenAlreadyUsed` tokenId	A single-use app token was already spent.	Mint a new token for this call.

`402`

Refusal	What it means	What to do
`SubscriptionRequired` status	The organization's subscription has lapsed, so writes are refused.	An owner settles billing. Reads still work meanwhile.

`403`

Refusal	What it means	What to do
`TenantRequired` userId	The token names no organization.	Choose the organization, then get a new token.
`ScopeRequired` required	The token's roles do not grant the scope this call needs.	Ask an owner or admin for a role that grants it.

`404`

Refusal	What it means	What to do
`PoNotFound` poId	No such record in this organization.	Check the id in the path or the body.
`ItemNotFound` sku	No such record in this organization.	Check the id in the path or the body.

`409`

Refusal	What it means	What to do
`PoHasReceipts` poId, status	Stock has already arrived against this purchase order.	Close it short instead of cancelling it.
`MirroredFromSource` source	This area is fed by your source system until the organization goes live.	Make the change in the source system, or go live first.

`502`

Refusal	What it means	What to do
`InventoryUnavailable` reason	The inventory service did not answer, so nothing changed.	Send the same request again, with the same key.

`503`

Refusal	What it means	What to do
`RequestLogUnavailable` tokenId, reason	The service could not record the request, so it did nothing.	Send the same request again, with the same key.

How refusals work everywhere: Errors.