How To Fix /IWNGW/CM_HUB010 - HTTP/HTTPS communication is not available

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_HUB -

• Message number: 010

• Message text: HTTP/HTTPS communication is not available

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWNGW/CM_HUB010 - HTTP/HTTPS communication is not available ?

  The SAP error message /IWNGW/CM_HUB010 HTTP/HTTPS communication is not available typically indicates that there is an issue with the communication between the SAP system and the HTTP/HTTPS services. This can occur in various scenarios, such as when trying to access OData services or when using the SAP Gateway.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the external service or client.
  Service Configuration: The HTTP/HTTPS services may not be properly configured in the SAP system.
  Gateway Issues: The SAP Gateway might not be running or may have encountered an error.
  Firewall Restrictions: Firewalls or security settings may be blocking the HTTP/HTTPS traffic.
  SSL Configuration: If using HTTPS, there may be issues with SSL certificates or configurations.
  System Load: High system load or resource constraints may affect the availability of HTTP/HTTPS services.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that the SAP system can reach the external service or client. You can use tools like ping or telnet to test connectivity.
  
  
  
  Verify Service Configuration:
  
  Check the configuration of the HTTP/HTTPS services in the SAP system. Ensure that the relevant services are activated and properly configured.
  
  
  
  Restart SAP Gateway:
  
  If the SAP Gateway is not running, restart it. You can do this through transaction SMGW in the SAP GUI.
  
  
  
  Review Firewall Settings:
  
  Check the firewall settings to ensure that they are not blocking the required ports for HTTP/HTTPS communication (typically port 80 for HTTP and port 443 for HTTPS).
  
  
  
  Check SSL Configuration:
  
  If using HTTPS, verify that the SSL certificates are correctly installed and configured. You can check this in transaction STRUST.
  
  
  
  Monitor System Performance:
  
  Use transaction SM50 or SM66 to monitor system performance and check for any resource bottlenecks.
  
  
  
  Check Logs:
  
  Review the system logs for any additional error messages that may provide more context. You can check the logs in transaction SM21 or SLG1.
  
  
  
  Update SAP Notes:
  
  Check for any relevant SAP Notes that may address known issues related to this error message.
  
  
  
  Related Information:
  
  SAP Gateway: The SAP Gateway is responsible for handling HTTP/HTTPS requests and responses. Understanding its configuration and status is crucial for troubleshooting this error.
  OData Services: If you are working with OData services, ensure that they are properly defined and activated in the SAP system.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or consult SAP support for further assistance.