How To Fix GG408 - A line already exists with the same contents

GG408 - Overview

• Message type: E = Error

• Message class: GG - Messages for FI-SL customizing

• Message number: 408

• Message text: A line already exists with the same contents

What causes this issue?

A line already exists with the same key or the same contents.

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

System Response

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

GG408 - Details

• The SAP error message GG408, which states "A line already exists with the same contents," typically occurs in the context of data entry or data processing within SAP, particularly in modules like Financial Accounting (FI) or Controlling (CO). This error indicates that the system has detected a duplicate entry that matches an existing line in the database or in the current transaction.
  
  Cause:
  
  
  Duplicate Entries: The most common cause is that the user is trying to enter a line item that already exists in the system. This could be due to:
  
  Manual data entry errors.
  Importing data from external sources that contain duplicates.
  Repeating transactions that have not been properly cleared or processed.
  
  
  
  
  Configuration Issues: Sometimes, the error can arise from configuration settings that enforce unique constraints on certain fields or combinations of fields.
  
  
  Data Migration Issues: If data has been migrated from another system, there may be duplicates that were not identified during the migration process.
  
  
  
  Solution:
  
  
  Check