How To Fix SAP_NWBC020 - Screen number &1 is not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: SAP_NWBC - NWBC Messages

• Message number: 020

• Message text: Screen number &1 is not valid

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.

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAP_NWBC020 - Screen number &1 is not valid ?

  The SAP error message SAP_NWBC020 with the description "Screen number &1 is not valid" typically occurs in the context of the SAP NetWeaver Business Client (NWBC) when the system is unable to find or access a specified screen or transaction. This can happen for several reasons, and here are some common causes, solutions, and related information:
  Causes:
  
  Invalid Screen Number: The screen number specified in the transaction or configuration does not exist or is incorrectly entered.
  Missing Authorization: The user may not have the necessary authorizations to access the specified screen.
  Configuration Issues: There may be issues with the configuration of the NWBC or the underlying SAP system.
  Transport Issues: If the screen was recently transported from another system, it may not have been properly imported or activated.
  Version Compatibility: The version of NWBC being used may not be compatible with the backend SAP system.
  
  Solutions:
  
  Check Screen Number: Verify that the screen number referenced in the error message is correct. You can do this by checking the transaction or program that is supposed to call the screen.
  Authorization Check: Ensure that the user has the necessary authorizations to access the screen. This can be done by checking the user's roles and authorizations in the SAP system.
  Configuration Review: Review the configuration settings in NWBC and ensure that they are set up correctly. This includes checking the settings in the SAP GUI and NWBC configuration.
  Transport Validation: If the screen was recently transported, check the transport logs to ensure that it was successfully imported and activated in the target system.
  System Compatibility: Ensure that the version of NWBC is compatible with the SAP backend system. If there are known issues with compatibility, consider updating NWBC or the backend system.
  Debugging: If you have access to debugging tools, you can try to debug the transaction to see where it fails and gather more information about the error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to the error message. SAP frequently updates its knowledge base with solutions to common problems.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues faced by other users and the solutions they found.
  Documentation: Review the official SAP documentation for NWBC and the specific transactions you are working with to ensure you are following the correct procedures.
  
  If the issue persists after trying the above solutions, it may be necessary to contact your SAP support team or SAP directly for further assistance.