If errors still occur, contact Google Cloud Support. Wait for a while and then try the flow again. To resolve any 500 errors for SAML app creation: While creating a SAML app in the Admin console, you might see the following 500 errors:

Use the already configured application or use a different entity ID. To resolve the 400 duplicate entity id error: You'll see this if you try to create an application with an already existing entity ID. While creating a SAML app in the Admin console, you might see the following 400 error: 400 duplicate entity id To aid in troubleshooting, use the SAML encode/decode tool to process a SAML request and response in human readable form from the HTTP Archive Format (HAR) file.

Encode or decode SAML requests and responses

If you encounter any Security Assertion Markup Language (SAML) app error messages, here are some troubleshooting steps to help you.