How To Fix SHTTP028 - No successor request exists

SAP Error Message - Details

• Message type: E = Error

• Message class: SHTTP - Messages for Development Class SHTTP

• Message number: 028

• Message text: No successor request exists

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 SHTTP028 - No successor request exists ?

  The SAP error message SHTTP028: No successor request exists typically occurs in the context of SAP's HTTP communication, particularly when dealing with web services or HTTP requests. This error indicates that the system is unable to find a successor request for the current HTTP request being processed. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Session Management Issues: The HTTP session may have expired or been terminated unexpectedly, leading to the inability to find a successor request.
  Incorrect URL or Endpoint: The request may be directed to an incorrect URL or endpoint that does not correspond to a valid successor request.
  Configuration Issues: There may be misconfigurations in the SAP system related to HTTP services or web service definitions.
  Network Issues: Network interruptions or issues could lead to incomplete requests or responses, causing the system to lose track of the request chain.
  Authorization Problems: The user may not have the necessary authorizations to access the requested resource, leading to a failure in processing the request.
  
  Solutions:
  
  Check Session State: Ensure that the session is active and has not expired. If it has, re-establish the session and retry the request.
  Verify URL/Endpoint: Double-check the URL or endpoint being accessed to ensure it is correct and corresponds to a valid service.
  Review Configuration: Look into the configuration settings for the HTTP services in SAP. Ensure that all necessary services are properly defined and activated.
  Network Diagnostics: Conduct network diagnostics to ensure there are no connectivity issues between the client and the SAP server.
  Authorization Check: Verify that the user has the necessary authorizations to perform the requested action. Check roles and permissions in the SAP system.
  Check Logs: Review the SAP application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message SHTTP028. SAP frequently updates its knowledge base with solutions for common errors.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Refer to the official SAP documentation for HTTP services and web service configurations for best practices and troubleshooting steps.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.