How To Fix CLB2_PROXY002 - CSRF token is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: CLB2_PROXY -

• Message number: 002

• Message text: CSRF token is invalid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CLB2_PROXY002 - CSRF token is invalid ?

  The SAP error message CLB2_PROXY002 CSRF token is invalid typically occurs in the context of web applications that use Cross-Site Request Forgery (CSRF) protection mechanisms. This error indicates that the CSRF token sent with the request does not match the expected token on the server side, which can happen for several reasons.
  Causes:
  
  Expired Session: The CSRF token is often tied to a user session. If the session has expired, the token will no longer be valid.
  Token Mismatch: The token sent in the request does not match the token stored on the server. This can happen if:
  
  The user refreshes the page or navigates away and then returns.
  The application generates a new token after the page load, and the old token is still being used.
  
  
  Browser Issues: Sometimes, browser extensions or settings can interfere with the proper handling of cookies or tokens.
  Multiple Tabs: If the user has multiple tabs open for the same application, the CSRF token may get mixed up between the tabs.
  Network Issues: Intermittent network issues can lead to incomplete requests, causing the token validation to fail.
  
  Solutions:
  
  Refresh the Page: Simply refreshing the page can often resolve the issue, as it will generate a new CSRF token.
  Log Out and Log Back In: This can help reset the session and generate a new valid CSRF token.
  Clear Browser Cache and Cookies: Sometimes, clearing the cache and cookies can resolve issues related to stale tokens.
  Check for Multiple Sessions: Ensure that you are not logged into the application in multiple tabs or windows simultaneously.
  Disable Browser Extensions: If you suspect that a browser extension might be interfering, try disabling them temporarily.
  Consult Application Logs: If you have access to the application logs, check for any additional error messages or warnings that might provide more context.
  
  Related Information:
  
  CSRF Protection: CSRF tokens are used to protect web applications from unauthorized actions performed by users without their consent. They ensure that requests made to the server are intentional and originate from the authenticated user.
  SAP Notes: Check SAP Notes or the SAP Support Portal for any specific notes related to this error message, as there may be patches or updates that address known issues.
  Development Considerations: If you are a developer, ensure that your application correctly handles CSRF tokens, including proper generation, validation, and error handling.
  
  If the problem persists after trying the above solutions, it may be necessary to contact your SAP support team for further assistance.