generated: '2026-07-11' method: derived source: openapi/ariba-sourcing-external-approval-api.yaml docs: https://help.sap.com/docs/ariba-apis/help-for-sap-ariba-developer-portal/use-of-api-gateway-and-oauth-to-authenticate-applications note: SAP Ariba APIs use a two-legged OAuth client credentials flow (grant_type=client_credentials) with no scope parameter; access is governed by per-API access requests, application keys, and realm approval rather than documented OAuth scopes (https://help.sap.com/docs/ariba-apis/help-for-sap-ariba-developer-portal/use-of-api-gateway-and-oauth-to-authenticate-applications). schemes: - name: OAuth2 source: openapi/ariba-sourcing-external-approval-api.yaml flows: - flow: clientCredentials tokenUrl: https://api.ariba.com/v2/oauth/token description: OAuth 2.0 authentication. Obtain access token from https://api.ariba.com/v2/oauth/token using client credentials. scopes: []