How To Fix WB2B2128 - Error calling method &1 of class &2. Shadow item &3|&4

SAP Error Message - Details

• Message type: E = Error

• Message class: WB2B2 - Trading Contract (part 2)

• Message number: 128

• Message text: Error calling method &1 of class &2. Shadow item &3|&4

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 WB2B2128 - Error calling method &1 of class &2. Shadow item &3|&4 ?

  The SAP error message WB2B2128 indicates an issue related to the B2B (Business-to-Business) integration process, specifically when calling a method of a class in the context of shadow items. This error typically arises in scenarios involving the SAP Business Suite or SAP S/4HANA, particularly in the context of e-commerce or B2B transactions.
  Cause:
  The error message WB2B2128 can be caused by several factors, including:
  
  Incorrect Configuration: There may be misconfigurations in the B2B settings or in the specific class or method being called.
  Data Issues: The shadow item referenced in the error may not exist, or there may be inconsistencies in the data being processed.
  Authorization Issues: The user or process may not have the necessary authorizations to execute the method in question.
  System Bugs: There could be bugs in the SAP system or in the custom code that is being executed.
  
  Solution:
  To resolve the WB2B2128 error, you can take the following steps:
  
  Check Configuration: Review the B2B configuration settings in your SAP system. Ensure that all necessary settings are correctly configured.
  Validate Data: Check the data related to the shadow item mentioned in the error message. Ensure that the item exists and is correctly set up in the system.
  Review Authorizations: Ensure that the user or process executing the method has the necessary authorizations. You may need to check roles and permissions.
  Debugging: If you have access to the development environment, you can debug the method being called to identify the exact point of failure. Look for any exceptions or errors in the code.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error. There may be known issues or fixes available.
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with the full error message and any relevant context to help them diagnose the issue.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for B2B integration and the specific classes and methods involved in your implementation.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  System Logs: Review system logs (transaction SLG1) for additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the WB2B2128 error in your SAP system.