SAP Ariba

This page records how composerID publishes into SAP Ariba: the vendor’s API posture, the publish target and field mapping, and the documentation each claim rests on. It is for anyone evaluating the connection or building against it. SAP Ariba is an enterprise source-to-pay and sourcing suite. Contingent services and SOW work are modelled through Sourcing Projects, Requisitions and Contract Workspaces rather than a single VMS object. composerID maps canonical intent onto those objects across Ariba’s REST, SOAP and cXML surfaces.

Category: Vendor Management & Sourcing. Coverage status: Specification mapped. Vendor documentation: public developer portal.

Integration path

How composerID connects to this destination, at a glance.

Step	Detail
Authentication	OAuth 2.0 client-credentials PLUS a per-API Application Key.
composerID publishes	Requisition (Contingent): Operational Requisition / Sourcing Request
Intent ID lands on	`requisition` `extrinsic.IntentID`, written into the destination record
Back-sync	Polling: the destination publishes no events composerID can subscribe to, so state is read back on a schedule.

Vendor documentation

SAP Business Accelerator Hub: Ariba REST APIs

Making REST API calls with OAuth token + application key

SAP Ariba SOAP Web Service APIs

SAP Ariba Developer Portal

API posture

Aspect	Detail
Authentication	OAuth 2.0 client-credentials PLUS a per-API Application Key. Every call sends apiKey + Authorization: Bearer. Token from https://api.ariba.com/v2/oauth/token. One application per API per realm.
Style	REST (JSON) + SOAP (strategic sourcing) + cXML (transactional documents over Ariba Network)
Base URL	https://openapi.ariba.com/api/\{service\}/\{version\}/\{env\} e.g. /sourcing-approval/v2/prod
Webhooks	Poll-first. cXML push over Ariba Network; External Approval API for inbound/outbound approvals. No general object-change webhook bus.
Events posture	Polling
Rate limits	Per app key + per API, multi-window (per sec/min/hour/day). Varies widely by API; raised case-by-case via account exec.
Objects	Sourcing Project, Sourcing Request / Requisition, Purchase Order, Supplier, Contract Workspace (SOW), Invoice (cXML)

Publish target and field mapping

Each object below pairs the canonical intent fields with the destination’s own fields and operations. The mapping is indicative until it is confirmed against a tenant at onboarding.

Requisition (Contingent)

Create external worker request

Mapping	Detail
Canonical to destination	role_title, location, start_date, cost_center, worker_type
Target	Operational Requisition / Sourcing Request
Requirement	Required + tenant required
Notes	Preflight enforces tenant-required fields

Statement of Work

Services / SOW engagement

Mapping	Detail
Canonical to destination	service_category, sow.summary, deliverables[], budget, dates
Target	Contract Workspace (SOW type)
Requirement	Often tenant required
Notes	SOW is modelled as a contract-workspace type

Purchase Order

Transact the order

Mapping	Detail
Canonical to destination	po_lines, supplier, amount
Target	cXML PO over Ariba Network
Requirement	Network-dependent
Notes	Transacted via Ariba Network

Intent ID correlation

Carry the Intent ID

Mapping	Detail
Canonical to destination	intent_id, intent_version
Target	cXML Extrinsic / custom field on the requisition
Requirement	Required
Notes	Extrinsics ride existing cXML documents; realm-level app approval governs write access

SOW / contingent labour is not a first-class REST object; field-level schemas live in per-API WSDL/OpenAPI specs on the Business Accelerator Hub, several behind Hub login. App keys take ~12h to activate, and apps are promoted from test realm to production.

Next steps

How composerID connects

The five ways composerID reaches a destination, and the minimum a destination must offer.

Publishing

Plan, preflight and publish: how a decision becomes a valid record in a destination.

All destinations

Every destination composerID documents, with its category and coverage status.

⌘I

Get started

Concepts

Guides

Destinations

Upstream connectors

API reference

Endpoints

Manuscript API (Triage)

Manuscript endpoints

Resources

Integration path

Vendor documentation

SAP Business Accelerator Hub: Ariba REST APIs

Making REST API calls with OAuth token + application key

SAP Ariba SOAP Web Service APIs

SAP Ariba Developer Portal

API posture

Publish target and field mapping

Next steps

How composerID connects

Publishing

All destinations

​Integration path

​Vendor documentation

SAP Business Accelerator Hub: Ariba REST APIs

Making REST API calls with OAuth token + application key

SAP Ariba SOAP Web Service APIs

SAP Ariba Developer Portal

​API posture

​Publish target and field mapping

​Next steps

How composerID connects

Publishing

All destinations

Integration path

Vendor documentation

API posture

Publish target and field mapping

Next steps