What Your Customer's IT Admin Does on Their Side of SSO

SSO integration troubleshooting is complicated by a split of responsibility: identity provider administrators configure applications, claims, user assignments, metadata, and optional provisioning in consoles vendors cannot access, while the application only receives and validates assertions at its ACS endpoint. A typical setup includes creating the app, entering Entity ID and ACS URL values, selecting a NameID format, mapping attributes, assigning users or groups, exchanging IdP metadata, and testing, with missed user assignment being a frequent cause of failures that generate no traffic or logs on the application side. The guidance emphasizes that SSO authentication and SCIM provisioning are separate configurations with distinct credentials, mappings, enablement controls, and user scopes, so users may be able to sign in without being provisioned or vice versa. Effective diagnosis depends on evidence-based questions, such as confirming assignment in the IdP console, testing with a non-administrator account, requesting the base64-encoded SAMLResponse from browser network tools, and checking for recent certificate, attribute, or group changes. It recommends that products expose decoded recent assertions, validation results, certificate status, observed attributes, and independent SSO and provisioning statuses so administrators can resolve many issues without support intervention.

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