Turn SAP Business Network into an API

What you can build on SAP Business Network

• Get purchase orders

  Build this

  Reads the orders list in the Workbench Orders tile, filtered by customer and order status, with each order's routing status.

  Takes

  Customer (optional), order status (optional), received from date (optional)

  Returns

  Order number, customer, order date, order status, routing status, amount

• Check invoice statuses

  Build this

  Reads your invoices with each one's invoice status, such as Sent, Rejected, Approved or Paid, and its routing status, such as Failed or Acknowledged.

  Takes

  Customer (optional), invoice status (optional)

  Returns

  Invoice number, customer, order number, invoice date, invoice status, routing status, amount

• List items to ship

  Build this

  Reads the order lines listed in the Workbench Items to Ship tile, with the part ID, quantity and need-by date each ship notice copies from the order.

  Takes

  Customer (optional)

  Returns

  Order number, line number, part ID, description, quantity, need-by date, customer

• Confirm a purchase order

  Build this

  Opens an order, creates an order confirmation that confirms all line items with an estimated delivery date, and submits it.

  Takes

  Customer, order number, estimated delivery date, comment (optional)

  Returns

  Order number, order status, confirmed lines

Automate SAP Business Network 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.

• New and Changed purchase orders, every customer

  Build this

  Starts

  Every weekday at 7:00

  Step 1

  Get the purchase orders with order status New or Changed.

  Step 2

  Keep the orders that were not there on the last run.

  Step 3

  Email you the list, one section per customer.

• Rejected and Failed invoices, sent for correction

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  Check invoice statuses for Rejected invoices and Failed routing.

  Step 2

  Keep the invoices that changed since the last run.

  Step 3

  Post each one, with customer, order number and amount, to your Slack or ERP webhook.

• Paid invoices, handed to accounting

  Build this

  Starts

  Every day at 18:00

  Step 1

  Check invoice statuses for invoices in Paid status.

  Step 2

  Keep the invoices that were not Paid on the last run, and stop when there are none.

  Step 3

  Post invoice number, customer, order number, invoice date 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 purchase orders” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "supplier.ariba.com/get_purchase_orders",
    "input": {
      "customer": "Acme",
      "order_status": "New"
    }
  }'

{
  "status": "completed",
  "data": {
    "customer": "Acme",
    "orders": [
      {
        "order_number": "4500218834",
        "order_date": "2026-11-11",
        "order_status": "New",
        "routing_status": "Sent",
        "amount": 12460,
        "currency": "EUR"
      }
    ],
    "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.

SAP Business Network’s own options

SAP documents a Purchase Orders Supplier API that reads order headers and line items. It is open only to suppliers with an Enterprise account, through the SAP Ariba Developer Portal; Standard account suppliers cannot use the portal. Enterprise accounts can also integrate by cXML or EDI and carry charges based on the number and value of transactions. Standard accounts are free.

Read on November 12, 2026: Purchase Orders Supplier API (version 2608), Supplier account types.

Signing in to SAP Business Network

SAP Business Network can ask, at sign-in, for a time-based verification code from an authenticator app such as SAP Authenticator, Google Authenticator or Microsoft Authenticator. With Fous you sign in through SAP Business Network's own sign-in with your own account. The login is sealed with AES-256, never returned by the API or written to logs, and code and AI agents never see it.

Worth knowing

Standard and Enterprise accounts differ

A Standard account handles orders, ship notices and invoices from interactive emails. Viewing previous documents, running reports and cXML or EDI integration belong to Enterprise accounts.

Order status is not routing status

Order status (New, Changed, Confirmed, Shipped, Invoiced) follows the goods. Routing status (Sent, Acknowledged, Failed) only follows the document. A changed order leaves its old version as Obsoleted.

Approved invoices cannot be changed

You can edit and resubmit an invoice that is Rejected or whose routing Failed. Once your customer approves it, a correction goes as a credit memo.

Reports are generated, then downloaded

You run a report template, use Refresh Status, and download the file once its status is Processed. Workbench lists can also be exported to Excel.

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