How To Fix /IWNGW/CM_HUB015 - An http error '&1' occured while getting metadata from external provider

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 015

• Message text: An http error '&1' occured while getting metadata from external provider

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWNGW/CM_HUB015 - An http error '&1' occured while getting metadata from external provider ?

  The SAP error message /IWNGW/CM_HUB015 indicates that there was an HTTP error while trying to retrieve metadata from an external provider. This error typically occurs in the context of SAP Gateway services when the system is trying to access an external service or API and encounters an issue.
  Causes:
  
  Network Issues: There may be connectivity problems between the SAP system and the external provider.
  Incorrect URL: The URL configured for the external provider may be incorrect or outdated.
  Authentication Issues: The external service may require authentication, and the credentials provided may be invalid or missing.
  Service Unavailability: The external service may be down or experiencing issues.
  Firewall/Proxy Issues: Firewalls or proxy settings may be blocking the request to the external provider.
  HTTP Status Codes: The error message may be accompanied by an HTTP status code (e.g., 404, 500) that can provide more context about the failure.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the SAP system can reach the external provider. You can use tools like ping or curl to test connectivity.
  Verify URL: Double-check the URL configured for the external provider in the SAP system. Make sure it is correct and accessible.
  Review Authentication: If the external service requires authentication, ensure that the correct credentials are being used. Check if any tokens or API keys are required.
  Check Service Status: Verify if the external service is up and running. You can check the service status or contact the service provider for more information.
  Review Firewall/Proxy Settings: If there are firewalls or proxies in place, ensure that they are configured to allow traffic to the external provider.
  Analyze HTTP Status Codes: If an HTTP status code is provided, analyze it to understand the specific issue. For example:
  
  404 Not Found: The resource is not available at the specified URL.
  500 Internal Server Error: There is an issue on the server side of the external provider.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Use transaction codes like SICF to check the configuration of the HTTP services in SAP.
  Logs: Review the application logs (e.g., SLG1) for more detailed error messages that can provide additional context.
  SAP Gateway: Familiarize yourself with the SAP Gateway framework and how it interacts with external services.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or the external service provider for further assistance.