Pull your ONE eCommerce invoices into your own systems

What you can build on ONE eCommerce

• Get outstanding invoices

  Build this

  Reads Outstanding Management in the ONE FINANCE Hub: outstanding invoices, BLs and overdue charges, with balance and credit limit, for one customer code.

  Takes

  Customer code (optional), overdue only (optional)

  Returns

  Invoice number, BL number, charge, amount, currency, overdue, account balance, credit limit, overdue amount

• Check billing dispute statuses

  Build this

  Reads Dispute Management in the ONE FINANCE Hub: each dispute you raised, its status and the latest reply from ONE's finance team.

  Takes

  Customer code (optional), status (optional)

  Returns

  Invoice or BL number, raised on, status, latest message, latest message date

• Find receipts

  Build this

  Searches Receipt Inquiry in the ONE FINANCE Hub by BL number, invoice reference or date and reads the official receipts it lists.

  Takes

  BL number, invoice reference or date

  Returns

  Receipt number, BL number, invoice reference, payment channel, amount, currency, date

• Raise a billing dispute on an invoice

  Build this

  Opens an invoice or BL line in Outstanding Management, raises a billing dispute with your reason and returns the dispute as Dispute Management lists it.

  Takes

  Customer code, invoice or BL number, reason

  Returns

  Invoice or BL number, dispute status, date raised

Automate ONE eCommerce with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• Overdue charges for each customer code

  Build this

  Starts

  Every weekday at 7:00

  Step 1

  For each customer code you name, get the outstanding invoices in Outstanding Management.

  Step 2

  Keep the ones marked overdue.

  Step 3

  Email you the list, one section per customer code, with BL number, invoice number and amount.

• Billing disputes that changed status

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  For each customer code, read Dispute Management.

  Step 2

  Keep the disputes whose status changed since the last run.

  Step 3

  Post each one, with its status and ONE's latest message, to your ERP or Slack webhook.

• The day's receipts, handed to accounting

  Build this

  Starts

  Every weekday at 18:00

  Step 1

  Find the receipts dated today in Receipt Inquiry.

  Step 2

  Stop when there are none.

  Step 3

  Post receipt number, BL number, invoice reference, payment channel and amount to your accounting webhook.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get outstanding invoices” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "one-line.com/get_outstanding_invoices",
    "input": {
      "customer_code": "ACME01",
      "overdue_only": false
    }
  }'

{
  "status": "completed",
  "data": {
    "customer_code": "ACME01",
    "account_balance": 18420,
    "credit_limit": 50000,
    "overdue_amount": 2650,
    "currency": "USD",
    "invoices": [
      {
        "invoice_number": "INV-7731042",
        "bl_number": "ACMEB0948211",
        "charge": "Ocean freight",
        "amount": 15770,
        "currency": "USD",
        "overdue": false
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

ONE eCommerce’s own options

ONE offers Schedule, Price and Shipment & Tracking APIs through its Developer Portal to registered customers, partners and authorised developers, after it reviews and approves each request. It also exchanges EDI messages for bookings, shipping instructions, status, VGM and invoices. Invoices, disputes and receipts are in the ONE FINANCE Hub inside ONE eCommerce, which exports invoice data as PDF or Excel.

Read on November 12, 2026: ONE Developer Portal FAQ, ONE Data Integration: API and EDI, ONE FINANCE Hub.

Signing in to ONE eCommerce

You sign in to ONE eCommerce with your own account. You can pay as a guest, but paying from your account and seeing the full transaction history need you to be signed in. With Fous you sign in once through ONE eCommerce's own sign-in: the login is sealed with AES-256, and an expired session is signed back in.

Worth knowing

Services depend on your country

The ONE FINANCE Hub is offered country by country, and you see only the services available in yours. A method reads only what your account is shown.

Parent and child customer codes

Entity Switching moves between parent and child entities, so a method takes the customer code as an input. The Statement of Account can be requested for several customer codes at once.

Pay before the invoice exists

Advance Payment takes your BL as the payment reference when an urgent charge has no invoice yet. Payment Submission shows whether a bank transfer has reached ONE's account.

API access is reviewed per request

ONE reviews and validates each Developer Portal request and emails you when its status changes. Its APIs cover schedules, prices and shipment tracking, not the ONE FINANCE Hub.

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