How To Fix TW020 - Nametab header is expected

SAP Error Message - Details

• Message type: E = Error

• Message class: TW - R3trans - Messages

• Message number: 020

• Message text: Nametab header 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 TW020 - Nametab header is expected ?

  The SAP error message TW020, which states "Nametab header is expected," typically occurs in the context of SAP ABAP programming or when dealing with data dictionary objects. This error indicates that the system is expecting a name table header but is not finding it, which can lead to issues in processing.
  Causes:
  
  Missing Name Table Header: The most common cause is that the name table header is missing in the data structure or program where it is expected.
  Incorrect Data Structure: The data structure being used may not be defined correctly, leading to the absence of the required header.
  Corrupted or Incomplete Data: If the data being processed is corrupted or incomplete, it may not contain the necessary headers.
  Programming Errors: Errors in the ABAP code, such as incorrect declarations or mismanagement of data types, can lead to this issue.
  
  Solutions:
  
  Check Data Structure: Ensure that the data structure you are working with includes the necessary name table header. You may need to redefine or adjust the structure.
  Review ABAP Code: Go through the ABAP code to ensure that all declarations are correct and that the name table is being properly initialized and populated.
  Debugging: Use the SAP debugger to step through the code and identify where the error occurs. This can help pinpoint the exact location and cause of the issue.
  Consult Documentation: Refer to SAP documentation or the data dictionary to understand the expected structure and ensure compliance.
  Testing: If changes are made, test the program or transaction thoroughly to ensure that the error is resolved and that no new issues are introduced.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for assistance.
  
  By following these steps, you should be able to identify the cause of the TW020 error and implement a suitable solution.