How To Fix SWWW020 - The parameter name in the URL is incorrect - &1 is expected

SAP Error Message - Details

• Message type: E = Error

• Message class: SWWW - Messages for Web reporting

• Message number: 020

• Message text: The parameter name in the URL is incorrect - &1 is expected

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SWWW020 - The parameter name in the URL is incorrect - &1 is expected ?

  The SAP error message SWWW020 indicates that there is an issue with the parameters being passed in the URL of a web application or service. Specifically, it means that the parameter name provided in the URL is incorrect, and the system is expecting a different parameter name (denoted by &1 in the error message).
  Cause:
  
  Incorrect Parameter Name: The most common cause is that the URL being accessed contains a parameter name that does not match what the SAP application expects.
  Typographical Error: There may be a typo in the URL where the parameter is defined.
  Outdated Documentation: If the URL structure has changed (for example, due to an update in the application), the documentation or links being used may be outdated.
  Configuration Issues: There may be configuration issues in the SAP system that lead to incorrect parameter expectations.
  
  Solution:
  
  Check the URL: Review the URL you are using to ensure that all parameter names are correct. Compare them against the expected parameters in the SAP documentation or the application’s API reference.
  Refer to Documentation: Consult the relevant SAP documentation or help files to confirm the correct parameter names and their expected values.
  Debugging: If you have access to the backend, you can debug the application to see what parameters it is expecting and adjust your URL accordingly.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting SAP community forums for assistance.
  Update Links: If you are using links from emails or documents, ensure they are up to date and reflect the current application structure.
  
  Related Information:
  
  SAP Notes: Check for any SAP Notes related to the specific transaction or application you are working with, as they may provide additional insights or fixes.
  Transaction Codes: If applicable, use transaction codes like SWIA (Work Item Administration) or SWI1 (Work Item Selection) to investigate further.
  Web Services: If the error is occurring in a web service context, ensure that the service definition (WSDL) is being followed correctly.
  
  By following these steps, you should be able to identify and correct the issue causing the SWWW020 error message.