Authorise the supplier invoice, confirming per-line unit costs

POST /pos/{poId}/invoice

This is the cost-confirmation point: until it happens, stock is valued at PO price. Accepted on an authorised, partially-received or received order, and — as a retry — on the invoiced order this command itself produces (409 PoNotAuthorised on a draft, closed or cancelled order): a fully received order becomes invoiced (and closed in the same commit when the organization's autoClose setting is on); a partially received one records invoicedAt and stays where the goods say it is. Accounting derives cost corrections from the delta. Idempotent by content: a retry that confirms the same costs on an already-invoiced PO is acknowledged and appends nothing; different costs are refused with 409 PoAlreadyInvoiced (an invoice is not re-authorised, it is corrected). Appends purchasing.invoice-authorised.

Access

Requires purchasing:write.

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

Retries

Idempotent by content: a retry that confirms the same costs on an already-invoiced PO is acknowledged and appends nothing; different costs are refused with 409 PoAlreadyInvoiced (an invoice is not re-authorised, it is corrected).

Why every write carries a key: Idempotency and retries.

Facts appended

purchasing.invoice-authorised

What a fact is: Facts and the journal.

AI agent tool

Agents call this as purchasing_authorise_invoice (Purchasing: Authorise invoice), in the purchasing toolset.

Connecting an agent: AI agents.

Example

curl

curl -X POST 'https://purchasing.getmanifold.io/pos/po_01a15876-6c9e-7b3a-8c4d-9e0f1a2b3c4d/invoice' \
  -H "Authorization: Bearer $MANIFOLD_TOKEN" \
  -H 'Content-Type: application/json' \
  -d '{
  "lines": [
    {
      "sku": "WIDGET-BLUE",
      "unitCostCents": 1310
    }
  ]
}'

JavaScript (fetch)

const response = await fetch("https://purchasing.getmanifold.io/pos/po_01a15876-6c9e-7b3a-8c4d-9e0f1a2b3c4d/invoice", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.MANIFOLD_TOKEN}`, "Content-Type": "application/json" },
  body: JSON.stringify({
    "lines": [
      {
        "sku": "WIDGET-BLUE",
        "unitCostCents": 1310
      }
    ]
  }),
});
if (!response.ok) throw new Error(`${response.status}: ${await response.text()}`);
const answer = await response.json();

Request body · application/json

{
  "lines": [
    {
      "sku": "WIDGET-BLUE",
      "unitCostCents": 1310
    }
  ]
}

Response · 200 · application/json

{
  "id": "po_01a15876-6c9e-7b3a-8c4d-9e0f1a2b3c4d",
  "number": "PO-00001",
  "serial": 1,
  "reference": "PO-WIDGET-BLUE",
  "supplier": "Northwind Components",
  "supplierId": "cmp_01a15884-6399-7e5f-8a6b-1c2d3e4f5a6b",
  "currency": "AUD",
  "status": "invoiced",
  "lines": [
    {
      "sku": "WIDGET-BLUE",
      "ordered": 40,
      "received": 40,
      "cancelled": 0,
      "unitCostCents": 1250,
      "confirmedUnitCostCents": 1310
    }
  ],
  "landedCosts": [],
  "payables": [
    {
      "currency": "AUD",
      "billedCents": 52400,
      "paidCents": 0
    }
  ],
  "payments": [],
  "revision": 0,
  "createdAt": "2026-09-22T01:15:00.000Z",
  "updatedAt": "2026-10-03T00:30:00.000Z",
  "expectedOn": "2026-10-01",
  "receipts": [
    {
      "receiptId": "rcpt_01a15864-bc4f-7f80-b1c3-5d6e7f809a1b",
      "receivedOn": "2026-10-01",
      "lines": [
        {
          "sku": "WIDGET-BLUE",
          "quantity": 40
        }
      ]
    }
  ],
  "invoicedAt": "2026-10-03T00:30:00.000Z"
}

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. Some can answer a retry of a call that already worked: they are marked.

`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.

`409`

Refusal	What it means	What to do
`PoNotAuthorised` poId, status Can answer a retry	The purchase order is not authorised, so it cannot receive or be invoiced.	If this answers a retry, your first call probably landed. Authorise it first.
`PoAlreadyInvoiced` poId	The purchase order is already invoiced.	Nothing to do: the invoice stands.
`UnknownPoLine` poId, sku	The SKU is not on the purchase order.	Add the line first, or check the SKU.
`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 shortly.

`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 shortly.

How refusals work everywhere: Errors.

Used in

Procure to pay, step 8: Settle the supplier invoice