SCIM Attribute Mapping: Syncing Custom Fields From Okta, Azure AD, and Google Workspace
Blog post from SSOJet
SCIM 2.0 enterprise user extension defines six attributes—employeeNumber, costCenter, organization, division, department, and manager—that vary in implementation across different identity providers (IdPs) like Okta, Microsoft Entra ID, and Google Workspace, leading to inconsistencies in attribute mapping. This variation necessitates a translation layer to align these attributes into a consistent SCIM JSON payload for applications. Each IdP uses distinct naming conventions and mapping methodologies; for example, Okta utilizes its Universal Directory and Okta Expression Language for attribute mapping, while Microsoft Entra ID and Google Workspace have their own specific mapping rules and constraints. SCIM attribute mapping involves configuring mappings to ensure that user attributes from different IdPs conform to the fixed target schema established by RFC 7643 and RFC 7644, while also addressing common challenges such as avoiding email as a match key due to its potential to change, and normalizing attribute values to maintain consistency across platforms. Solutions like SSOJet help standardize these mappings by providing a consistent user object irrespective of the source IdP, thereby facilitating seamless integration across various enterprise applications.
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