How To Fix GU980 - The target table already contains data -> Read long text

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 980

• Message text: The target table already contains data -> Read long text

What causes this issue?

Since the target table already contains data (possibly in a different
client), any subsequent changes made to the field movements for the
conversion could result in inconsistencies between the summary table
that has already been converted and the control tables and line item
tables that still have to be converted.

System Response

For this reason, you can only display the conversion field movements
for both of these tables.

How to fix this error?

If subsequent changes are essential, you must first delete the
transaction data in the target table.
If necessary, the entire conversion must be repeated.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GU980 - The target table already contains data -> Read long text ?

  The SAP error message GU980, which states "The target table already contains data," typically occurs during data transfer or data loading processes when the system detects that the target table already has existing records. This can happen in various scenarios, such as during data migration, batch input sessions, or when using tools like LSMW (Legacy System Migration Workbench) or BAPIs (Business Application Programming Interfaces).
  Cause:
  
  Existing Data: The target table already has records that conflict with the data being loaded.
  Data Integrity Constraints: The data being inserted may violate primary key or unique constraints in the target table.
  Incorrect Configuration: The data transfer process may not be configured to handle existing data correctly (e.g., trying to insert instead of update).
  Batch Input Session: If using batch input, the session may not be set up to handle existing records properly.
  
  Solution:
  
  Check Existing Data: Before loading data, check the target table to see what records already exist. You can use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to view the data.
  Update Instead of Insert: If the intention is to update existing records, ensure that the data transfer process is set up to perform updates rather than inserts. This may involve using different BAPIs or modifying the LSMW project settings.
  Delete Existing Records: If appropriate, you can delete the existing records in the target table before loading new data. Be cautious with this approach to avoid data loss.
  Use a Different Target Table: If the data being loaded is meant to be distinct, consider using a different target table or a different set of keys to avoid conflicts.
  Modify Data Load Logic: If using custom programs or scripts, modify the logic to check for existing records and handle them accordingly (e.g., skip, update, or log).
  Consult Documentation: Review the documentation for the specific data transfer tool or method you are using to ensure it is configured correctly.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE16 (Data Browser), and LSMW (Legacy System Migration Workbench).
  Data Migration Best Practices: Follow best practices for data migration, including data cleansing, validation, and testing in a non-production environment before executing in production.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to the error message GU980.
  Error Logs: Review error logs or application logs for more detailed information about the error context.
  
  By following these steps, you should be able to resolve the GU980 error and successfully manage your data loading processes in SAP.