How To Fix /SAPAPO/TDL_DAO128 - At least one of the records has a key which already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/TDL_DAO -

• Message number: 128

• Message text: At least one of the records has a key which already exists

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/TDL_DAO128 - At least one of the records has a key which already exists ?

  The SAP error message /SAPAPO/TDL_DAO128 indicates that there is a duplicate key issue in the context of the SAP Advanced Planning and Optimization (APO) module, specifically related to the Transfer Data Load (TDL) process. This error typically occurs when you are trying to load data into the system, and one or more records being loaded have a key that already exists in the target database table.
  Cause:
  
  Duplicate Records: The most common cause is that the data being loaded contains records with keys that already exist in the target table. This can happen if the data extraction process has not filtered out existing records or if the source data itself contains duplicates.
  Incorrect Data Preparation: If the data preparation step (e.g., data extraction, transformation) did not properly handle existing records, it can lead to attempts to insert duplicates.
  Configuration Issues: There may be issues with the configuration of the data load process, such as incorrect settings for handling duplicates.
  
  Solution:
  
  Identify Duplicates: Check the source data for duplicates. You can do this by querying the source data to find records with the same key.
  Remove or Update Duplicates: Depending on your business requirements, you can either:
  
  Remove the duplicate records from the source data before loading.
  Update the existing records in the target table instead of trying to insert new ones.
  
  
  Adjust Data Load Settings: If applicable, adjust the settings in the data load process to handle duplicates appropriately. This may involve configuring the load process to update existing records instead of inserting new ones.
  Use a Staging Table: Consider using a staging table to load the data first, where you can perform checks and transformations before moving the data to the final target table.
  Error Handling: Implement error handling in your data load process to log and manage errors effectively, allowing for easier troubleshooting in the future.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes in SAP APO, such as /SAPAPO/TDL for data load processes.
  SAP Notes: Check for any SAP Notes related to this error message for additional guidance or patches that may address known issues.
  Documentation: Review the SAP APO documentation for best practices on data loading and handling duplicates.
  Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to resolve the /SAPAPO/TDL_DAO128 error and successfully load your data into the SAP system.