How To Fix S_CMI_ACT_CHK026 - Duplicate Keys during Insert into Staging Table. &1 Duplicates

SAP Error Message - Details

• Message type: E = Error

• Message class: S_CMI_ACT_CHK - Message class for Activation checks

• Message number: 026

• Message text: Duplicate Keys during Insert into Staging Table. &1 Duplicates

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 S_CMI_ACT_CHK026 - Duplicate Keys during Insert into Staging Table. &1 Duplicates ?

  The SAP error message S_CMI_ACT_CHK026 indicates that there are duplicate keys being encountered during an attempt to insert data into a staging table. This typically occurs in the context of data migration or data loading processes, such as when using SAP Data Services, SAP BW, or other ETL (Extract, Transform, Load) tools.
  Cause:
  The error is caused by the presence of duplicate records in the source data that you are trying to load into the staging table. The staging table is designed to hold unique records based on a defined key (or combination of keys), and when the system detects that the same key is being inserted more than once, it raises this error.
  Solution:
  To resolve the S_CMI_ACT_CHK026 error, you can take the following steps:
  
  
  Identify Duplicate Records:
  
  Review the source data to identify which records are causing the duplication. You can use SQL queries or data profiling tools to find duplicates based on the key fields defined in the staging table.
  
  
  
  Remove or Handle Duplicates:
  
  Depending on your business requirements, you can either:
  
  Remove the duplicate records from the source data.
  Aggregate the duplicate records if applicable (e.g., summing values, taking the latest date).
  Modify the data transformation logic to handle duplicates appropriately.
  
  
  
  
  
  Adjust Staging Table Constraints:
  
  If duplicates are expected and valid in your business context, consider adjusting the constraints on the staging table. However, this should be done with caution, as it may lead to data integrity issues.
  
  
  
  Re-run the Data Load:
  
  After addressing the duplicates, re-run the data load process to see if the error persists.
  
  
  
  Logging and Monitoring:
  
  Implement logging and monitoring to capture instances of duplicate records in the future, which can help in proactive data quality management.
  
  
  
  Related Information:
  
  Staging Tables: These are temporary tables used to hold data before it is transformed and loaded into the final destination tables. They often have constraints to ensure data integrity.
  Data Quality: Ensuring the quality of source data is crucial for successful data loading processes. Regular data cleansing and validation can help prevent such errors.
  ETL Processes: Understanding the ETL process and how data flows from source to destination can help in troubleshooting issues like this.
  
  By following these steps, you should be able to resolve the S_CMI_ACT_CHK026 error and ensure a smooth data loading process.