How To Fix SRT_WSP2182 - Reverse Proxy "&1" has an invalid substitute host name "&2".

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP2 - Messages for SRT WSP

• Message number: 182

• Message text: Reverse Proxy "&1" has an invalid substitute host name "&2".

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 SRT_WSP2182 - Reverse Proxy "&1" has an invalid substitute host name "&2". ?

  The SAP error message SRT_WSP2182 indicates that there is an issue with the configuration of a reverse proxy in the SAP system. Specifically, it suggests that the reverse proxy is trying to use a substitute host name that is invalid or not properly configured.
  Cause:
  
  Invalid Substitute Host Name: The substitute host name specified in the reverse proxy configuration does not match any valid host or is incorrectly formatted.
  DNS Issues: The DNS resolution for the substitute host name may not be working correctly, leading to the inability to resolve the host.
  Configuration Errors: There may be errors in the configuration settings of the reverse proxy, such as typos or incorrect entries.
  Network Issues: Network connectivity issues may prevent the SAP system from reaching the specified substitute host.
  
  Solution:
  
  
  Check Configuration:
  
  Go to the SAP system and check the configuration of the reverse proxy settings.
  Ensure that the substitute host name is correctly specified and matches the intended target.
  
  
  
  Validate Host Name:
  
  Verify that the substitute host name is valid and reachable. You can use tools like ping or nslookup to check if the host resolves correctly.
  
  
  
  Update DNS Settings:
  
  If the substitute host name is not resolving, check the DNS settings on the server where the SAP system is running. Ensure that the DNS server is correctly configured and reachable.
  
  
  
  Review Network Connectivity:
  
  Ensure that there are no network issues preventing access to the substitute host. Check firewall settings, routing, and any other network configurations that might block access.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for reverse proxy configuration to ensure that all settings are correctly applied.
  
  
  
  SAP Notes:
  
  Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  
  Restart Services:
  
  After making changes, it may be necessary to restart the relevant services or the entire SAP system to apply the new configuration.
  
  
  
  Related Information:
  
  Reverse Proxy: A reverse proxy acts as an intermediary for requests from clients seeking resources from servers that provide those resources. It can help with load balancing, security, and caching.
  SAP Web Dispatcher: If you are using SAP Web Dispatcher as a reverse proxy, ensure that its configuration is correct and that it is properly integrated with your SAP system.
  Logs: Check the SAP application logs (transaction SLG1) and system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  
  By following these steps, you should be able to identify and resolve the issue related to the SRT_WSP2182 error message.