How To Fix GU906 - The target table already contains data

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 906

• Message text: The target table already contains data

What causes this issue?

The conversion cannot be performed because the target table already
contains data.

How to fix this error?

Since the target table may not contain any data for the conversion, you
must first delete the data in the target table (Customizing).

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GU906 - The target table already contains data ?

  The SAP error message GU906, "The target table already contains data," typically occurs during data transfer processes, such as when using the Data Transfer Workbench (DTW) or during data migration activities. This error indicates that the target table in the SAP system already has existing records, which conflicts with the operation you are trying to perform (e.g., inserting new records).
  Causes:
  
  Existing Data: The target table already contains records that conflict with the data you are trying to insert.
  Primary Key Violations: The data you are trying to insert may have primary key values that already exist in the target table.
  Data Transfer Settings: The settings or configurations in the data transfer process may not be set to allow for appending data to existing records.
  
  Solutions:
  
  
  Check Existing Data: Before performing the data transfer, check the target table to see what data already exists. You can use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to view the contents of the table.
  
  
  Delete Existing Records: If appropriate, you can delete the existing records in the target table before performing the data transfer. Be cautious with this approach, as it may lead to data loss.
  
  
  Update Existing Records: If the intention is to update existing records rather than insert new ones, ensure that your data transfer process is set up to perform updates instead of inserts.
  
  
  Modify Data Transfer Settings: Review the settings in your data transfer tool (like DTW) to ensure that it is configured to handle existing data correctly. Some tools may have options to append, update, or ignore existing records.
  
  
  Use a Different Target Table: If the data you are trying to insert is fundamentally different and should not conflict with existing records, consider using a different target table.
  
  
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance related to the data transfer tool you are using.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE16 (Data Browser), and others that may help you analyze the data in the target table.
  Data Migration Tools: If you are using specific data migration tools (like SAP Data Services or SAP S/4HANA Migration Cockpit), check their documentation for handling existing data scenarios.
  SAP Notes: Search for SAP Notes related to error GU906 for any specific patches or updates that may address this issue.
  
  By following these steps, you should be able to resolve the GU906 error and successfully complete your data transfer process.