How To Fix MRNB023 - Error reading error message &1 (message class &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: MRNB - Messages for Revaluation (Retro Active Pricing)

• Message number: 023

• Message text: Error reading error message &1 (message class &2)

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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Smart SAP Assistant

• What is the cause and solution for SAP error message MRNB023 - Error reading error message &1 (message class &2) ?

  The SAP error message MRNB023, which states "Error reading error message &1 (message class &2)," typically indicates that the system is unable to retrieve a specific error message from the message class defined in the system. This can occur for several reasons, and here are some potential causes, solutions, and related information:
  Causes:
  
  Missing Message Class or Message: The specified message class or the specific message number does not exist in the system.
  Transport Issues: If the message class was recently transported from another system, it may not have been properly imported or activated.
  Authorization Issues: The user may not have the necessary authorizations to access the message class or the specific message.
  System Configuration Issues: There may be configuration issues within the SAP system that prevent the retrieval of messages.
  
  Solutions:
  
  
  Check Message Class:
  
  Use transaction code SE91 to check if the message class and the specific message number exist. If they do not, you may need to create them or correct the reference in your program or configuration.
  
  
  
  Transport Check:
  
  If the message class was recently transported, ensure that the transport request was successfully imported. You can check the transport logs for any errors.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary authorizations to access the message class. You can check this using transaction SU53 or by consulting with your security team.
  
  
  
  System Configuration:
  
  Ensure that the system is properly configured and that there are no inconsistencies. You may need to consult with your Basis team to check for any system issues.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can set breakpoints in the relevant ABAP code to see where the error is occurring and gather more information about the context of the error.
  
  
  
  SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates available that resolve the issue.
  
  
  
  Related Information:
  
  Message Classes: In SAP, message classes are used to group related messages. Each message class can contain multiple messages, and they are identified by a unique name.
  Transaction Codes:
  
  SE91: To manage message classes.
  SE80: To access the Object Navigator, where you can find related programs and objects.
  SE37: To check function modules that may be related to the error.
  
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, providing them with the error details and any troubleshooting steps you have already taken.
  
  By following these steps, you should be able to identify and resolve the MRNB023 error in your SAP system.