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"java.lang.RuntimeException: FriendlyName '' is not unique" error thrown when saving SAML settings

Symptoms

After successfully adding a SAML Identity Provider and verifying access, the administrator sees the following error when clicking "Save Changes":

The System Has Encountered an Error
HTTP Code: 500
APNX-1-4198-019

An Error Has Occurred
Expression evaluation error at function a!adminRouter: An error occurred while executing a save: java.lang.RuntimeException: FriendlyName '' is not unique

Cause

Multiple SAML Identity Providers have a blank Web Address Identifier. The Web Address Identifier cannot be shared or left blank across multiple SAML Identity Providers.

Action

Assign a unique Web Address Identifier to each Identity Provider.

Affected Versions

This article applies to Appian versions 17.3 and newer using multiple SAML Identity Providers.

Last Reviewed: October 2018