How To Fix CNV856 - Reloading is not possible for table &. Scen. &, and table is not empty.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 856

• Message text: Reloading is not possible for table &. Scen. &, and table is not empty.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV856 - Reloading is not possible for table &. Scen. &, and table is not empty. ?

  The SAP error message "CNV856 Reloading is not possible for table &. Scen. &, and table is not empty." typically occurs during data migration or conversion processes, particularly when using SAP's Conversion Tools or during the execution of a migration project. This error indicates that the system is attempting to reload data into a specific table, but the table is not empty, which prevents the reload operation from proceeding.
  Cause:
  
  Non-empty Table: The primary cause of this error is that the target table already contains data. The migration or conversion process expects the table to be empty before reloading data.
  Incorrect Configuration: There may be a misconfiguration in the migration settings or parameters that leads to this situation.
  Previous Migration Attempts: If there were previous migration attempts that did not complete successfully, they may have left residual data in the table.
  
  Solution:
  
  Check Table Contents: Before attempting to reload data, check the contents of the specified table. You can do this using transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser).
  Clear the Table: If it is safe to do so, you can delete the existing data from the table. This can be done using a DELETE statement in SQL or through the appropriate SAP transaction. Ensure that you have backups or that the data is no longer needed.
  
  Example SQL command: DELETE FROM <table_name>;
  
  
  Adjust Migration Settings: Review the migration settings to ensure that they are configured correctly. If the migration process should allow for data to be appended rather than reloaded, adjust the settings accordingly.
  Consult Documentation: Refer to the SAP documentation related to the specific migration tool or scenario you are using. There may be specific guidelines or prerequisites that need to be followed.
  Error Logs: Check the error logs for more detailed information about the migration process. This can provide insights into what went wrong and how to address it.
  Contact SAP Support: If the issue persists and you cannot determine the cause or solution, consider reaching out to SAP Support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11, SE16, and others that may help you analyze the data in the affected table.
  Migration Tools: Understand the specific migration tools or scenarios you are using, as different tools may have different requirements and behaviors.
  Backup Procedures: Always ensure that you have proper backup procedures in place before making changes to the database, especially when deleting data.
  
  By following these steps, you should be able to resolve the error and successfully reload data into the specified table.