How To Fix GW490 - No conversation ID found in argument vector

SAP Error Message - Details

• Message type: E = Error

• Message class: GW - Message Texts for Gateway

• Message number: 490

• Message text: No conversation ID found in argument vector

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 GW490 - No conversation ID found in argument vector ?

  The SAP error message GW490: No conversation ID found in argument vector typically occurs in the context of SAP Gateway or when dealing with communication between SAP systems or between SAP and external systems. This error indicates that the system is unable to find a conversation ID in the parameters being passed, which is essential for maintaining the state of a communication session.
  Causes:
  
  Missing or Incorrect Parameters: The conversation ID may not be included in the request or may be incorrectly formatted.
  Session Timeout: If a session has timed out, the conversation ID may no longer be valid.
  Network Issues: Problems in the network can lead to loss of session information.
  Configuration Issues: Incorrect configuration in the SAP Gateway or related components can lead to this error.
  Programming Errors: If custom code is involved, there may be bugs or issues in how the conversation ID is being handled.
  
  Solutions:
  
  Check Parameters: Ensure that the conversation ID is being passed correctly in the request. Verify that all required parameters are included.
  Session Management: If the session has timed out, try re-establishing the session and ensure that the conversation ID is generated and passed correctly.
  Network Stability: Investigate any network issues that may be affecting communication between systems.
  Review Configuration: Check the configuration settings for the SAP Gateway and ensure that they are set up correctly.
  Debugging: If custom code is involved, use debugging tools to trace the flow of the conversation ID and identify where it might be getting lost or not set.
  SAP Notes: Check for any relevant SAP Notes or updates that might address this issue. Sometimes, SAP releases patches or notes that provide solutions for specific error messages.
  
  Related Information:
  
  SAP Gateway: Understanding how SAP Gateway works and its role in communication can help in troubleshooting this error.
  Session Management: Familiarize yourself with how sessions are managed in SAP, including timeout settings and how to handle session persistence.
  Error Logs: Review the system logs (transaction SM21) and Gateway logs (transaction /IWFND/ERROR_LOG) for additional context around the error.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered and resolved similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or a technical consultant who specializes in SAP Gateway and communication issues.