How To Fix CNV_10020671 - &1 is a standard table; changes are not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 671

• Message text: &1 is a standard table; changes are not allowed

What causes this issue?

&V1& is a SAP standard table. The settings for SAP standard tables
should be correct and they should remain unchanged.

How to fix this error?

If you still want to change the settings, please contact SAP support by
opening an OSS message.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020671 - &1 is a standard table; changes are not allowed ?

  The SAP error message CNV_10020671 indicates that an attempt was made to modify a standard table, which is not allowed in SAP systems. This error typically arises during data migration or conversion processes, especially when using tools like SAP's Data Migration Workbench or during custom development.
  Cause:
  
  Modification Attempt: The error occurs when a program or a user tries to insert, update, or delete records in a standard SAP table that is not meant to be modified directly.
  Data Migration: During data migration, if the migration tool tries to write to a standard table, it will trigger this error.
  Custom Code: Custom ABAP code that attempts to modify standard tables without using the appropriate BAPIs or function modules can also lead to this error.
  
  Solution:
  
  
  Use BAPIs or Function Modules: Instead of directly modifying standard tables, use the appropriate Business Application Programming Interfaces (BAPIs) or function modules provided by SAP. These are designed to handle data changes in a way that respects the integrity of the standard tables.
  
  
  Check Migration Logic: If this error occurs during a data migration process, review the migration logic to ensure that it does not attempt to modify standard tables directly. Instead, use the recommended migration tools and methods provided by SAP.
  
  
  Review Custom Code: If the error is triggered by custom ABAP code, review the code to ensure it adheres to SAP's guidelines for modifying data. Avoid direct database operations on standard tables.
  
  
  Consult SAP Documentation: Refer to SAP's official documentation or notes related to the specific standard table you are working with. This can provide insights into the correct methods for data manipulation.
  
  
  Error Handling: Implement error handling in your code or migration process to catch this error and provide meaningful feedback or alternative actions.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions for this specific error message.
  SAP Community: Engage with the SAP Community forums to see if others have encountered and resolved this issue.
  Testing: Always test changes in a development or quality assurance environment before applying them to production to avoid unintended consequences.
  
  By following these guidelines, you should be able to address the CNV_10020671 error effectively.