Guided buying and intake into S/4HANA

Guided buying is the consumer-style front end of SAP Ariba Buying: requesters search catalogs and forms, get policy guidance, and submit requests that route for approval. The integration question is where the requisition and the purchase order live. SAP's integration scenario for guided buying with S/4HANA (scope item 2NV, via the managed gateway) supports, broadly, two patterns described in SAP Community material: the PO is created and sent in Ariba with numbers copied to S/4HANA for reference, or the approved requisition is replicated to S/4HANA as a purchase requisition and the PO is created in S/4HANA. Contoso uses the second pattern so that S/4HANA stays the system of record for POs, receipts and invoices.

Worked example: Rosa orders bearings

Rosa, the Detroit maintenance planner, needs 40 bearings for the rotor line. She finds them in the MRO supplier's catalog in guided buying at 85.00 USD each, 3,400.00 USD in total, for plant 1710 with account assignment to cost center 17101107 Detroit Rotor Line. Guided buying checks the budget, routes the request to her manager, and after approval sends it through the managed gateway. S/4HANA creates a purchase requisition and converts it into a purchase order; the PO goes to the supplier through Business Network. Guided buying shows Rosa the PR and PO numbers and later the receipt and invoice status.

Approvals: one place, not two

Contoso's approval rules in S/4HANA are purchase requisitions over 10,000 USD need release and purchase orders over 25,000 USD need approval in flexible workflow. Guided buying has its own approval flows. If both apply, a requisition is approved twice and buyers chase two inboxes. Contoso's design (illustrative): approval of guided buying requests happens in Ariba; the replicated S/4HANA requisitions use a document type without release strategy; and the 25,000 USD PO approval in S/4HANA still applies, because it is the finance control Dan relies on. Testers check both thresholds on both sides.

Intake management

SAP Ariba Intake Management, generally available since April 2026, is a front door for any procurement request, including requests that are not catalog purchases (new suppliers, contracts, software). It routes the request to the right process, which may end in guided buying, sourcing or a contract. For S/4HANA integration it changes little at first, because the documents that reach S/4HANA are still requisitions and orders. For testers it adds a new start point: end-to-end cases now begin in intake, not in guided buying.

Step by step: testing one guided buying request

1. Log on to guided buying in the test realm as a test requester with Rosa's profile; choose the catalog item and quantity.
2. Enter account assignment cost center 17101107 and submit; capture the budget check result and the approval route.
3. Approve as the test manager; note the time of approval.
4. In the gateway tracker, find the requisition message and its status; in CMQ, find the purchase requisition and the PO created from it.
5. Compare field by field against the mapping table; check that no S/4HANA release was required.
6. Check PO output to the supplier test account; then confirm, receive and invoice, and check the journal entry account.
7. Back in guided buying, confirm that the requisition shows the PO, receipt and invoice references.