How To Fix /IWXBE/CORE203 - Connection test failed. Verify the OAuth 2.0 Endpoints and Outbound User

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWXBE/CORE -

• Message number: 203

• Message text: Connection test failed. Verify the OAuth 2.0 Endpoints and Outbound User

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWXBE/CORE203 - Connection test failed. Verify the OAuth 2.0 Endpoints and Outbound User ?

  The SAP error message /IWXBE/CORE203 Connection test failed. Verify the OAuth 2.0 Endpoints and Outbound User typically indicates an issue with the configuration of OAuth 2.0 authentication when trying to establish a connection to an external service or system. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  
  Incorrect OAuth 2.0 Endpoints: The endpoints for the OAuth 2.0 authorization and token retrieval may be incorrectly configured. This includes the authorization URL and token URL.
  
  
  Invalid Credentials: The outbound user credentials (client ID and client secret) may be incorrect or not properly configured in the SAP system.
  
  
  Network Issues: There may be network connectivity issues preventing the SAP system from reaching the OAuth 2.0 endpoints.
  
  
  Scope Issues: The required scopes for the OAuth token may not be correctly defined or may not match what the external service expects.
  
  
  Service Availability: The external service you are trying to connect to may be down or experiencing issues.
  
  
  Firewall or Proxy Settings: Firewall or proxy settings may be blocking the connection to the OAuth 2.0 endpoints.
  
  
  Solutions:
  
  
  Verify OAuth 2.0 Endpoints:
  
  Check the configuration in your SAP system for the OAuth 2.0 endpoints. Ensure that the authorization and token URLs are correct and accessible.
  
  
  
  Check Outbound User Credentials:
  
  Verify that the client ID and client secret are correctly configured in the SAP system. Ensure that they match what is provided by the external service.
  
  
  
  Test Network Connectivity:
  
  Use tools like ping or curl to test connectivity to the OAuth 2.0 endpoints from the SAP system. Ensure that there are no network issues.
  
  
  
  Review Scopes:
  
  Ensure that the required scopes are included in the OAuth request. Check the documentation of the external service for the correct scopes.
  
  
  
  Check External Service Status:
  
  Verify that the external service is up and running. You can check their status page or contact their support if necessary.
  
  
  
  Firewall/Proxy Configuration:
  
  If applicable, check the firewall and proxy settings to ensure that they allow outbound connections to the OAuth 2.0 endpoints.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for configuring OAuth 2.0 connections, as it provides detailed steps and examples.
  Logs and Traces: Check the SAP application logs and traces for more detailed error messages that can provide additional context on the failure.
  Community Forums: Consider searching or posting on SAP community forums or support channels for additional insights from other users who may have encountered similar issues.
  
  By systematically checking each of these areas, you should be able to identify and resolve the issue causing the /IWXBE/CORE203 error message.