How To Fix DO821 - Runtime object for table type & cannot be written

SAP Error Message - Details

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 821

• Message text: Runtime object for table type & cannot be written

What causes this issue?

The runtime object (nametab) of the table type could not be written.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Details about the error can be found in the log. If necessary, try
again to activate the table type.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DO821 - Runtime object for table type & cannot be written ?

  The SAP error message DO821 indicates that there is an issue with writing a runtime object for a table type. This error typically occurs when there is a problem with the data structure or the way the data is being handled in your ABAP program. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  
  Incorrect Table Type Declaration: The table type may not be correctly defined in the ABAP Dictionary (SE11). If the structure of the table type does not match the expected format, this error can occur.
  
  
  Inconsistent Data Types: If the data types of the fields in the internal table do not match the expected types, it can lead to this error.
  
  
  Runtime Object Issues: The runtime object for the table type may not be generated correctly due to changes in the underlying data structure or other inconsistencies.
  
  
  Memory Issues: If the system is running low on memory, it may not be able to create or write the runtime object.
  
  
  Incorrect Use of Table Types: If you are trying to use a table type in a context where it is not allowed (e.g., passing it to a function module that does not accept it), this error can occur.
  
  
  Solutions:
  
  
  Check Table Type Definition: Go to transaction SE11 and verify the definition of the table type. Ensure that it is correctly defined and that all fields have the correct data types.
  
  
  Recreate Runtime Object: If the table type has been changed, you may need to regenerate the runtime object. You can do this by activating the table type again in SE11.
  
  
  Review Data Handling: Check the code where the table type is being used. Ensure that you are populating the internal table correctly and that the data types match.
  
  
  Memory Management: If you suspect memory issues, try to optimize your program to use less memory or check the system's memory status.
  
  
  Debugging: Use the ABAP debugger to step through the code and identify where the error occurs. This can provide insights into what might be going wrong.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can sometimes resolve underlying issues.
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE37 (Function Module), SE24 (Class Builder).
  ABAP Documentation: Review the official SAP documentation for ABAP programming, especially sections related to data types and internal tables.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis or ABAP development team for further assistance.