How To Fix DG150 - Error in buffer: data record exists already RECN: &1, ACTN: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: DG - DG: Messages for Dangerous Goods Management

• Message number: 150

• Message text: Error in buffer: data record exists already RECN: &1, ACTN: &2

What causes this issue?

The system attempted to enter a data record with a physical key that
already exists on the database.
The error probably occurred in the assignment of consecutive numbers to
one of the number range objects.

System Response

The system exits the transaction.

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DG150 - Error in buffer: data record exists already RECN: &1, ACTN: &2 ?

  The SAP error message DG150, which states "Error in buffer: data record exists already RECN: &1, ACTN: &2," typically occurs in the context of data processing within SAP, particularly when dealing with buffer management or data records in a database. This error indicates that there is an attempt to insert or update a record that already exists in the buffer or database, leading to a conflict.
  Cause:
  
  Duplicate Record: The most common cause of this error is that the system is trying to insert a record that already exists in the database or buffer. This can happen if the same data is being processed multiple times.
  Concurrency Issues: If multiple processes are trying to update or insert the same record simultaneously, it can lead to this error.
  Incorrect Logic in Custom Code: If there is custom ABAP code or enhancements that manipulate data records, there may be logic errors that lead to attempts to insert duplicates.
  Buffer Management Issues: Problems with how the buffer is managed or configured can also lead to this error.
  
  Solution:
  
  Check for Duplicates: Before attempting to insert or update a record, ensure that the record does not already exist. You can do this by querying the database or buffer to check for existing records.
  Review Custom Code: If there is custom ABAP code involved, review it for any logic that may lead to duplicate inserts. Ensure that the code properly checks for existing records before performing insert operations.
  Implement Error Handling: Add error handling in your code to gracefully manage situations where a duplicate record is detected, rather than allowing the system to throw an error.
  Database Locking: If concurrency is an issue, consider implementing database locking mechanisms to prevent multiple processes from trying to modify the same record at the same time.
  Buffer Configuration: Review the buffer configuration settings in your SAP system to ensure they are set up correctly and are not causing conflicts.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may want to check transaction codes related to the specific module you are working with (e.g., MM, SD, FI).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  System Logs: Check the system logs (transaction SLG1) for more detailed information about the error and the context in which it occurred.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to identify the cause of the DG150 error and implement a solution to resolve it.