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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
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.
Assign a unique Web Address Identifier to each Identity Provider.
This article applies to Appian versions 17.3 and newer using multiple SAML Identity Providers.
Last Reviewed: October 2018